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Thank you for posting this. Does this actually fix the issue? Does this mean that you are getting the higher res 4k image AND the lower input lag (~25.8ms) by doing this restart trick? Or is it just flipping back to the higher input lag that others have measure (roughly double what is claimed)?
Read a few posts before, we have been discussing this, that reddit thread is lacking the info we have here...

It's just a software bug, whenever the output image is at 4K resolution (which is defined in windows as the native resolution even tho the dmd is 1080p native) the latency is close to 50ms, @awest74 tested it in more detail already, optoma should rename "Enhanced gaming" to "Disable actuator", imo EG basically disables 4K output, thus achieving higher framerate and lower input latency.

Even tho @OPTOMA PM DUDE stated that the projector is not doing any downscale of the 4K input to 1080p because that would use up more resources (which i would generally agree), it is looking like using the actuator to get the 4K output is even more taxing on the system than downscaling and produces way more latency than downscaling does.
Hopefully, is another software bug that skipped through the cracks and like he says they're really investigating this and it will get fixed in a future firmware update... :rolleyes: wishful thinking!

Anyway, this really feels like a rushed out projector build, an over 1000usd piece of equipment and they didn't even go to effort of designing a dedicated remote control and left 3 unused keys on the remote for inputs that don't even exist... plus confusing and cryptic descriptions of functions in the user manual and some in there that probly aren't even a feature of this projector, what a sad joke.
 

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Read a few posts before, we have been discussing this, that reddit thread is lacking the info we have here...

It's just a software bug, whenever the output image is at 4K resolution (which is defined in windows as the native resolution even tho the dmd is 1080p native) the latency is close to 50ms, @awest74 tested it in more detail already, optoma should rename "Enhanced gaming" to "Disable actuator", imo EG basically disables 4K output, thus achieving higher framerate and lower input latency.
The spec says 4K @ 25.8ms. It's on the website and their marketing material. It is either capable of that or it isn't. Stating that your input lag is 25.8ms at 4K output and then not being able to produce it is false advertising and unacceptable if true. I feel like I have re-read all these replies a dozen times and it's still clear as mud. I just want to know from an official source if the projector can output 4K with something in the neighborhood of the advertised 25.8ms. OPTOMA_PM_DUDE says this in that thread:

For the input lag -- you can check using the Leo Bodnar 4K input lag tester. We verify using a "hardware scope" and the Leo Bodnar Input Lag Tester. The hardware scope is the best method but not for consumers or people who are not engineers. Leo Bodnar Input Lag Tester is available on their website.
but he doesn't come right out and give any numbers so who knows what this is in reference to. I have no use for a high end lag tester otherwise I'd buy the thing and do the test myself. I really don't want to spend $300 for a device I'll literally use one time.
 

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:confused: What receivers can you guys recommend to achieve 120hz @ 1080p for this projector?

I have read many threads on this topic and the replies vary from "it's not possible" to "such-and-such model supports that if you do this special thing."

I did come across someone mentioning the new Denon 8K receivers; specifically the AVR-S960. In theory, it should support that, but I don't want to spend extra money just for fun if I don't have to. I will have 2 primary input sources: PS4 (soon a PS5) and a PC. I'd like the option of playing at the higher refresh rates without doing cable swaps or having some convoluted setup. I will have a single cable running from the receiver to my projector through the attic.

I just received this cable fwiw: https://www.amazon.com/gp/product/B06XGDFCSC/
 

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:confused: What receivers can you guys recommend to achieve 120hz @ 1080p for this projector?

I have read many threads on this topic and the replies vary from "it's not possible" to "such-and-such model supports that if you do this special thing."

I did come across someone mentioning the new Denon 8K receivers; specifically the AVR-S960. In theory, it should support that, but I don't want to spend extra money just for fun if I don't have to. I will have 2 primary input sources: PS4 (soon a PS5) and a PC. I'd like the option of playing at the higher refresh rates without doing cable swaps or having some convoluted setup. I will have a single cable running from the receiver to my projector through the attic.

I just received this cable fwiw: https://www.amazon.com/gp/product/B06XGDFCSC/
If all else fails:

https://smile.amazon.com/gp/product/B07ZNKF7C8/

I can confirm that the above switch supports 1080P @ 120hz.
 

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:confused: What receivers can you guys recommend to achieve 120hz @ 1080p for this projector?

I have read many threads on this topic and the replies vary from "it's not possible" to "such-and-such model supports that if you do this special thing."

I did come across someone mentioning the new Denon 8K receivers; specifically the AVR-S960. In theory, it should support that, but I don't want to spend extra money just for fun if I don't have to. I will have 2 primary input sources: PS4 (soon a PS5) and a PC. I'd like the option of playing at the higher refresh rates without doing cable swaps or having some convoluted setup. I will have a single cable running from the receiver to my projector through the attic.

I just received this cable fwiw: https://www.amazon.com/gp/product/B06XGDFCSC/
Anecdotally, I'd also heard that the Denon receivers were quite good in this regard, but there is a serious lack of information on record.

I'm lucky in that when I looked into this (for my TK800) I'd already chosen a receiver, and it 100% works with a 1080p 120Hz signal. I have a Denon X4300h so it's a few years old, but it passes the signal without any issues and I've verified this using the blurbuster tests.

I have no idea how other receivers perform in this regard though. Good luck.
 

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This is all a bit of a bummer - long story short I need to order a new projector next week, and this one seemed perfect for me. Low input lag, 4k, good brightness is what I was after. I'm a bit hesitant to buy now with the gaming mode reports - are there any other projectors I should be looking at? The 5050ub is out of my price range.
 

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This is all a bit of a bummer - long story short I need to order a new projector next week, and this one seemed perfect for me. Low input lag, 4k, good brightness is what I was after. I'm a bit hesitant to buy now with the gaming mode reports - are there any other projectors I should be looking at? The 5050ub is out of my price range.
Best case is that Optoma fixes the 4K gaming mode with a firmware update, worst case is that you accept ~50ms lag in 4K or switch to a low lag 1080p gaming mode. For less money you can get an Optoma laser projector which accepts 4K HDR and outputs 1080P HDR with ~30ms lag (HZ39HDR, GT1090HDR, ZH406). Optoma has promised to drop the lag on these first two laser projectors to 16ms via firmware update.
 

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This is all a bit of a bummer - long story short I need to order a new projector next week, and this one seemed perfect for me. Low input lag, 4k, good brightness is what I was after. I'm a bit hesitant to buy now with the gaming mode reports - are there any other projectors I should be looking at? The 5050ub is out of my price range.
This model does not have good brightness, relatively speaking.

Epson HC3800. 28ms lag, almost twice as bright, longer throw, some lens shift (but with some issues), better black level/contrast.

What is the seating distance?

In terms of motion handling, this is the worst case scenario:



If you're in North America a 5040UB refurb is another option with much improved picture quality, with some caveats:
https://www.avsforum.com/forum/68-d...50-projector-something-else.html#post59777804

Also, what is the room like, color of walls, ambient light?
 

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Best case is that Optoma fixes the 4K gaming mode with a firmware update, worst case is that you accept ~50ms lag in 4K or switch to a low lag 1080p gaming mode. For less money you can get an Optoma laser projector which accepts 4K HDR and outputs 1080P HDR with ~30ms lag (HZ39HDR, GT1090HDR, ZH406). Optoma has promised to drop the lag on these first two laser projectors to 16ms via firmware update.
I have the GT1090HDR with the beta firmware to enable the 8.4ms input lag at 1080p/120hz and it's an amazing experience. I have a JVC RS2000 for critical watching so I don't care that this is 1080p for my PC FPS gaming.
 

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I have the GT1090HDR with the beta firmware to enable the 8.4ms input lag at 1080p/120hz and it's an amazing experience. I have a JVC RS2000 for critical watching so I don't care that this is 1080p for my PC FPS gaming.
For the UHD50x, there is definitely a problem/discrepancy between what Optoma say the 4k input lag is and what people are saying. That does need to be cleared up one way or another.
I think I might have said somewhere earlier in this thread though, that this device has other advantages, i.e. 120/240hz input, which does lead to extremely low lag.

All the focus is on 4k 60, which clearly is important, but I would argue that the projector has other strengths which 60hz videos can never actually show.
 

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That video is a stress test for the projector's ability to handle motion.
Ok, see what you mean now, but I think there are different angles to that statement. I would argue that a stress test would be something like the blurbusters UFO test with a static and trailing camera. Also I'd rather see high frame rate analysis and measurements like you see on Rtings for monitors etc.

I've seen input lag videos that show someone moving a joypad on a game controller. I think a leo bodnar input lag measurement would be more scientific.
 

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While we are waiting for a solution to the problem and an answer from the OPTOMA_PM_DUDE I have a question for the owners of the UHD30 / UHD50x.

I was told that the projector can also reproduce 120hz in 1440p. But according to the manual this is not possible. Could someone of you test if the projector supports this?
 

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While we are waiting for a solution to the problem and an answer from the OPTOMA_PM_DUDE I have a question for the owners of the UHD30 / UHD50x.

I was told that the projector can also reproduce 120hz in 1440p. But according to the manual this is not possible. Could someone of you test if the projector supports this?
- Resolutions ≤ 1080p have support all the way up to 240Hz
- Resolutions > 1080p only do 60Hz max

Code:
3840 by 2160, True Color (32 bit), 60 Hertz	
3840 by 2160, True Color (32 bit), 59 Hertz	
3840 by 2160, True Color (32 bit), 50 Hertz	
3840 by 2160, True Color (32 bit), 24 Hertz	
3840 by 2160, True Color (32 bit), 23 Hertz	
3840 by 2160, True Color (32 bit), 25 Hertz	
3840 by 2160, True Color (32 bit), 30 Hertz	
3840 by 2160, True Color (32 bit), 29 Hertz	
640 by 480, True Color (32 bit), 120 Hertz	
640 by 480, True Color (32 bit), 240 Hertz	
640 by 480, True Color (32 bit), 119 Hertz	
640 by 480, True Color (32 bit), 75 Hertz	
640 by 480, True Color (32 bit), 60 Hertz	
640 by 480, True Color (32 bit), 72 Hertz	
720 by 480, True Color (32 bit), 120 Hertz	
720 by 480, True Color (32 bit), 240 Hertz	
720 by 480, True Color (32 bit), 119 Hertz	
720 by 480, True Color (32 bit), 60 Hertz	
720 by 480, True Color (32 bit), 59 Hertz	
720 by 576, True Color (32 bit), 120 Hertz	
720 by 576, True Color (32 bit), 240 Hertz	
720 by 576, True Color (32 bit), 119 Hertz	
720 by 576, True Color (32 bit), 50 Hertz	
800 by 600, True Color (32 bit), 120 Hertz	
800 by 600, True Color (32 bit), 240 Hertz	
800 by 600, True Color (32 bit), 119 Hertz	
800 by 600, True Color (32 bit), 56 Hertz	
800 by 600, True Color (32 bit), 60 Hertz	
800 by 600, True Color (32 bit), 72 Hertz	
800 by 600, True Color (32 bit), 75 Hertz	
1024 by 768, True Color (32 bit), 120 Hertz	
1024 by 768, True Color (32 bit), 240 Hertz	
1024 by 768, True Color (32 bit), 60 Hertz	
1024 by 768, True Color (32 bit), 70 Hertz	
1024 by 768, True Color (32 bit), 75 Hertz	
1024 by 768, True Color (32 bit), 119 Hertz	
1152 by 864, True Color (32 bit), 60 Hertz	
1152 by 864, True Color (32 bit), 75 Hertz	
1152 by 864, True Color (32 bit), 120 Hertz	
1152 by 864, True Color (32 bit), 119 Hertz	
1152 by 864, True Color (32 bit), 240 Hertz	
1176 by 664, True Color (32 bit), 60 Hertz	
1280 by 720, True Color (32 bit), 60 Hertz	
1280 by 720, True Color (32 bit), 119 Hertz	
1280 by 720, True Color (32 bit), 240 Hertz	
1280 by 720, True Color (32 bit), 120 Hertz	
1280 by 768, True Color (32 bit), 60 Hertz	
1280 by 768, True Color (32 bit), 119 Hertz	
1280 by 768, True Color (32 bit), 240 Hertz	
1280 by 768, True Color (32 bit), 120 Hertz	
1280 by 800, True Color (32 bit), 60 Hertz	
1280 by 800, True Color (32 bit), 119 Hertz	
1280 by 800, True Color (32 bit), 240 Hertz	
1280 by 800, True Color (32 bit), 120 Hertz	
1280 by 960, True Color (32 bit), 60 Hertz	
1280 by 960, True Color (32 bit), 75 Hertz	
1280 by 960, True Color (32 bit), 120 Hertz	
1280 by 960, True Color (32 bit), 119 Hertz	
1280 by 960, True Color (32 bit), 240 Hertz	
1280 by 1024, True Color (32 bit), 60 Hertz	
1280 by 1024, True Color (32 bit), 75 Hertz	
1280 by 1024, True Color (32 bit), 120 Hertz	
1280 by 1024, True Color (32 bit), 119 Hertz	
1280 by 1024, True Color (32 bit), 240 Hertz	
1360 by 768, True Color (32 bit), 120 Hertz	
1360 by 768, True Color (32 bit), 119 Hertz	
1360 by 768, True Color (32 bit), 60 Hertz	
1360 by 768, True Color (32 bit), 240 Hertz	
1366 by 768, True Color (32 bit), 120 Hertz	
1366 by 768, True Color (32 bit), 119 Hertz	
1366 by 768, True Color (32 bit), 60 Hertz	
1366 by 768, True Color (32 bit), 240 Hertz	
1600 by 900, True Color (32 bit), 60 Hertz	
1600 by 900, True Color (32 bit), 59 Hertz	
1600 by 900, True Color (32 bit), 50 Hertz	
1600 by 900, True Color (32 bit), 24 Hertz	
1600 by 900, True Color (32 bit), 23 Hertz	
1600 by 900, True Color (32 bit), 120 Hertz	
1600 by 900, True Color (32 bit), 119 Hertz	
1600 by 900, True Color (32 bit), 240 Hertz	
1600 by 1024, True Color (32 bit), 60 Hertz	
1600 by 1024, True Color (32 bit), 59 Hertz	
1600 by 1024, True Color (32 bit), 50 Hertz	
1600 by 1024, True Color (32 bit), 24 Hertz	
1600 by 1024, True Color (32 bit), 23 Hertz	
1600 by 1024, True Color (32 bit), 120 Hertz	
1600 by 1024, True Color (32 bit), 119 Hertz	
1600 by 1024, True Color (32 bit), 240 Hertz	
1600 by 1200, True Color (32 bit), 60 Hertz	
1680 by 1050, True Color (32 bit), 60 Hertz	
1680 by 1050, True Color (32 bit), 59 Hertz	
1680 by 1050, True Color (32 bit), 50 Hertz	
1680 by 1050, True Color (32 bit), 24 Hertz	
1680 by 1050, True Color (32 bit), 23 Hertz	
1680 by 1050, True Color (32 bit), 120 Hertz	
1680 by 1050, True Color (32 bit), 119 Hertz	
1680 by 1050, True Color (32 bit), 240 Hertz	
1920 by 1080, True Color (32 bit), 120 Hertz	
1920 by 1080, True Color (32 bit), 60 Hertz	
1920 by 1080, True Color (32 bit), 59 Hertz	
1920 by 1080, True Color (32 bit), 50 Hertz	
1920 by 1080, True Color (32 bit), 24 Hertz	
1920 by 1080, True Color (32 bit), 23 Hertz	
1920 by 1080, True Color (32 bit), 240 Hertz	
1920 by 1080, True Color (32 bit), 119 Hertz	
1920 by 1200, True Color (32 bit), 60 Hertz	
1920 by 1440, True Color (32 bit), 60 Hertz	
1920 by 1440, True Color (32 bit), 59 Hertz	
1920 by 1440, True Color (32 bit), 50 Hertz	
1920 by 1440, True Color (32 bit), 24 Hertz	
1920 by 1440, True Color (32 bit), 23 Hertz	
1920 by 1440, True Color (32 bit), 25 Hertz	
1920 by 1440, True Color (32 bit), 30 Hertz	
1920 by 1440, True Color (32 bit), 29 Hertz	
2048 by 1536, True Color (32 bit), 60 Hertz	
2048 by 1536, True Color (32 bit), 59 Hertz	
2048 by 1536, True Color (32 bit), 50 Hertz	
2048 by 1536, True Color (32 bit), 24 Hertz	
2048 by 1536, True Color (32 bit), 23 Hertz	
2048 by 1536, True Color (32 bit), 25 Hertz	
2048 by 1536, True Color (32 bit), 30 Hertz	
2048 by 1536, True Color (32 bit), 29 Hertz	
2560 by 1440, True Color (32 bit), 60 Hertz	
2560 by 1440, True Color (32 bit), 59 Hertz	
2560 by 1440, True Color (32 bit), 50 Hertz	
2560 by 1440, True Color (32 bit), 24 Hertz	
2560 by 1440, True Color (32 bit), 23 Hertz	
2560 by 1440, True Color (32 bit), 25 Hertz	
2560 by 1440, True Color (32 bit), 30 Hertz	
2560 by 1440, True Color (32 bit), 29 Hertz	
2560 by 1600, True Color (32 bit), 60 Hertz	
2560 by 1600, True Color (32 bit), 59 Hertz	
2560 by 1600, True Color (32 bit), 50 Hertz	
2560 by 1600, True Color (32 bit), 24 Hertz	
2560 by 1600, True Color (32 bit), 23 Hertz	
2560 by 1600, True Color (32 bit), 25 Hertz	
2560 by 1600, True Color (32 bit), 30 Hertz	
2560 by 1600, True Color (32 bit), 29 Hertz	
4096 by 2160, True Color (32 bit), 24 Hertz	
4096 by 2160, True Color (32 bit), 23 Hertz	
4096 by 2160, True Color (32 bit), 25 Hertz	
4096 by 2160, True Color (32 bit), 30 Hertz	
4096 by 2160, True Color (32 bit), 29 Hertz	
4096 by 2160, True Color (32 bit), 50 Hertz	
4096 by 2160, True Color (32 bit), 60 Hertz	
4096 by 2160, True Color (32 bit), 59 Hertz	
3840 by 1080, True Color (32 bit), 60 Hertz	
1440 by 900, True Color (32 bit), 60 Hertz	
1440 by 900, True Color (32 bit), 59 Hertz	
1440 by 900, True Color (32 bit), 50 Hertz	
1440 by 900, True Color (32 bit), 24 Hertz	
1440 by 900, True Color (32 bit), 23 Hertz	
1440 by 900, True Color (32 bit), 120 Hertz	
1440 by 900, True Color (32 bit), 119 Hertz	
1440 by 900, True Color (32 bit), 240 Hertz	
1400 by 1050, True Color (32 bit), 60 Hertz	
1400 by 1050, True Color (32 bit), 59 Hertz	
1400 by 1050, True Color (32 bit), 50 Hertz	
1400 by 1050, True Color (32 bit), 24 Hertz	
1400 by 1050, True Color (32 bit), 23 Hertz	
1400 by 1050, True Color (32 bit), 120 Hertz	
1400 by 1050, True Color (32 bit), 119 Hertz	
1400 by 1050, True Color (32 bit), 240 Hertz

Also, not sure, but i think the projector only outputs image at 60Hz, 120Hz and 240Hz regardless of input.

Btw, for 3D, it accepts and works at both 60Hz and 120Hz, but the projector has a flaw with firmware 04 where it accepts to turn on 3D at 240Hz iirc but the screen will be an unreadable mess, they partially fixed it with firmware 05 by changing the edid or something, but i still managed to get a 240Hz 3D mode enabled with a black screen which took me awhile to figure out how to solve ...
 

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So I have this projector and really want to love it. However I am having the hardest time getting the picture right. Shadows and dark areas look very muddy. I preface this by saying I am not a professional calibrator or anything close to it. Just a guy who love the the big screen effect and has had 4 different projectors over the last 15 years or so.

I replaced a Benq 1085st with the UHD50X and I swear the Benq was brighter and no where near as muddy in shadows spots and/or dark films. But how could it be brighter? i beleive the Benq was rated a 2400 lumens versus the 50X at 3400.

If any of you guys know where I can get the calibrated setting for this projector I would greatly appreciate it. Heck any help would be appreciated. Man I have even considered RMAing it with Optoma.

I just keep thinking I just need to tweak something... right? Or could just be chasing the proverbial rabbit down it hole.

Thanks in advance...
 

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So I have this projector and really want to love it. However I am having the hardest time getting the picture right. Shadows and dark areas look very muddy. I preface this by saying I am not a professional calibrator or anything close to it. Just a guy who love the the big screen effect and has had 4 different projectors over the last 15 years or so.

I replaced a Benq 1085st with the UHD50X and I swear the Benq was brighter and no where near as muddy in shadows spots and/or dark films. But how could it be brighter? i beleive the Benq was rated a 2400 lumens versus the 50X at 3400.

If any of you guys know where I can get the calibrated setting for this projector I would greatly appreciate it. Heck any help would be appreciated. Man I have even considered RMAing it with Optoma.

I just keep thinking I just need to tweak something... right? Or could just be chasing the proverbial rabbit down it hole.

Thanks in advance...
Those are not the real lumens. Optoma is ~1200 (1350 in HDR) lumens and Benq can do up to 1700. High lamp.

You have to set the black and white floors:
https://www.avsforum.com/forum/68-d...on-hc-3200-3800-revealed-15.html#post59005708
https://www.avsforum.com/forum/68-d...on-hc-3200-3800-revealed-16.html#post59006190
 
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