View Full Version : Gaming lag on Sony KDS A2000's


calbear11
02-21-07, 12:56 AM
I have a very quick question. I did my best to look through the owner's thread to find the answer but I wasn't exactly successful. According to all the reports that I've read these SXRD's don't have any problematic gaming lag. I feel like most of these reports have come regarding xbox 360 in high def. I'm not at all concerned about lag issues in HD. I am curious about whether or not anyone has noticed any lag at all in 480i or 480p sources (where you would expect the worst lag because of the significantly lower resolution). Don't worry, I'm not getting this TV to play a playstation 2 primarily (it will mostly be 360 in 1080), but I do love guitar hero on playstation 2 and have been irritated by slight lag on the samsung hl s5086w with game mode turned on. I also notice slight lag on Wii in 480p.

For the owners: have you noticed any lag on these low-resolution game consoles for the sony kds A2000 line fo televisions? This also goes for Wii even with component cables.

Any reports are appreciated.

Thanks.

Andyisc00l
02-21-07, 02:18 AM
Sony SXRDs have 2.5ms display response times..should be fine

dcorban
02-21-07, 09:05 AM
He wasn't asking about the LCD refresh rate.

I am willing to bet that you will be able to play Guitar Hero without even using "game mode" on the A2000.

Yes, I agree that the Samsung DLPs have far too much lag (had one, returned it). Even with game mode on, it is noticable and also lowers the overall image quality by a large amount. Game mode on the Sonys seems to just use a faster, slightly more "bouncy" method of deinterlacing, but I don't notice much overall degradation. But, like I said, there is no need for game mode on my PS2, so I don't care.

klawrence
02-21-07, 10:52 AM
That's bunk... the SXRD's have bad lag, even in HD. ESPECIALLY in 1080p.

I have a 70" XBR2. For one, you only get to use Game Mode if you are using something OTHER than 1080p. Say what? Well that's what it says, right there in the menu. I thought it was the upconversion that caused the lag, but apparently that's not the whole story. Fine, so I set up my PC to output at 1080i (*shudder* look at all that flickering).

Fired up Battlefield 2142. Yes indeed, the lag is too much for first-person shooters. It's not even worth trying. I'd say it's about 90ms, based on my experience over the last 11 years playing multiplayer PC games, since Quake. That's right, even in Game mode you're going to have a 100ms delay between when you click and when you see/hear. When in 1080p (non game mode) the delay is more like 200-300 ms. Unbelievable! My network latency is only in the teens or twenties!

So I have given up entirely on gaming on this set. I am thinking about taking it back, although I did throw away the packaging.

FYI, I am using a DVI->HDMI cable from a amd 4400+ X2 and 7800gtx.

wxkid23
02-21-07, 12:08 PM
That seems odd... I have an XBR2 60" and while I see probably 30-40ms lag on my 360 upscaled from 720p.. it's nothing like 100ms lag (and I have been gaming for years.. I would know)

klawrence
02-21-07, 12:37 PM
dang. maybe there's something wrong with my set. I'm going to try booting with just the Sony plugged in to see what happens. Or maybe it's something to do with the digital output of my 7800gtx? I have always been using the analog for a CRT monitor.

so you would agree then that using a 1080p source *should* be faster than using the lower resolutions upscaled to 1080p with Game mode ON, right? At the moment, it's the opposite situation.

klawrence
02-21-07, 01:53 PM
ok I have discovered that using Nvidia's undercan processing adds quite a bit of latency/lag. At least, on a 7800GTX it does. Upon turning it off, there is still about 50ms or so in 1080p, and while it is better than game mode at 1080i, it is still annoying that I can't get less than that for a TV made in 2006. I turned off all the video options that I could find. I wonder if there is something in the service menu that affects this.

I doubt I will use this display for FPS gaming at all. You just can't be competive with an added delay of 50+ ms if you rely at all on your reflexes. I guess i'm going to have to get one of those 30" 2500x1600 LCD's.

In conclusion, this isn't a gamer's tv for first person shooters. if you're into RTS or RPG it is great. actually it's probably better to get a smaller screen anyway, since optimum seating is important for FPS and control; my couch isn't so good for that :)

Paul33993
02-21-07, 02:52 PM
I hate it when people invade threads and pimp other sets, but I'm going to do it this one time. This was a major reason I kept going away from both the Sony LCOS and Samsung DLP. I ultimately choose the Hitachi RPCRT and after major tweakings, love it.

I can dual output with my HTPC to the television and a CRT monitor and when I move the cursor, it's identical to the CRT monitor. ZERO lag. It's absolutely inexcusable that the TV manufacturers can't put scalers into the sets the eliminate this. Sony, of any company on the planet, should be making it a absolute priority. They at least should know better.

klawrence
02-21-07, 04:37 PM
hey Paul, a scaler won't help in my case. it's a 1080p source. It's just laggy. Whatever they do to the incoming digital just takes too long. I was able to minimize the problem, but it's still not enough for competitive FPS gameplay. I can't believe people get on here and say they don't notice it.

ok that's the end of my complaining. I already have decided to get a dedicated 2500x1600 monitor for computer use.

dcorban
02-22-07, 10:27 AM
I was able to minimize the problem, but it's still not enough for competitive FPS gameplay. I can't believe people get on here and say they don't notice it.
I wasn't aware that people were testing/complaining about the VGA input. I never bothered to test, but then I only have consoles that use component. If the VGA input is lagging, I would just use component (even if it is "only" 1080i) and enjoy the gaming. I am willing to bet that the HDMI input is also perfectly fine.

klawrence
02-22-07, 11:04 AM
last line of my first post in this thread says I am using the HDMI input from DVI. Actually, I would bet the opposite, that the analog inputs like component and vga would lag less than the digital. My 7800GTX came with a component output cable but I haven't been able to figure out how to get the card to output over this cable yet. Have not attempted the VGA because I don't have a VGA cable (my old monitor has the cable built in).

It will be nice if the analog inputs are not laggy with Game Mode.

AVBill
02-22-07, 11:05 AM
I tested gaming lag on the A2000 for the most common resolutions except 1080p. I'm skeptical that the A2000 lags at 1080p since this is the mode it had the least processing for (no game mode is needed, because nothing needs to be deinterlaced).

Pictures and Testing Methodology
http://www.avsforum.com/avs-vb/showthread.php?p=8144943&&#post8144943

Timing Estimations
http://www.avsforum.com/avs-vb/showthread.php?p=8154144&&#post8154144

Also, an HDMI input should (in theory) have less lag than an analog component input. The first thing the TV's processing needs to do with a component analog signal is digitize it (before it can digitally process it). With a digital signal this digitizing step is skipped. All other steps further down the pipeline are the same (between the analog and digital sources).

calbear11
02-22-07, 09:00 PM
AVBill that was EXACTLY what I was looking for. I really appreciate the work you did. I have my 55 inch A2000 scheduled for delivery tomorrow morning. I initially made the purchase after reading several reports that it was essentially a "lag-free" tv. I then discovered some reports that it would lag some, or lag terribly. None of these sources seemed perfectly credible.

I can now rest easy that there will be little enough lag that I will either not notice it at all or tolerate the small bit that is there.

One of the main reasons I decided to ditch my Samsung HL S5086W was that even in game mode the lag was irritating in low-resolution sources.

Now we just have to get Microsoft to start enabling 360's to use HDMI cables for 1080P and we'll be right where we want to be.

Thanks again AVBill.

AVBill
02-22-07, 09:33 PM
AVBill that was EXACTLY what I was looking for. I really appreciate the work you did. I have my 55 inch A2000 scheduled for delivery tomorrow morning. I initially made the purchase after reading several reports that it was essentially a "lag-free" tv. I then discovered some reports that it would lag some, or lag terribly. None of these sources seemed perfectly credible.

I can now rest easy that there will be little enough lag that I will either not notice it at all or tolerate the small bit that is there.

One of the main reasons I decided to ditch my Samsung HL S5086W was that even in game mode the lag was irritating in low-resolution sources.

Now we just have to get Microsoft to start enabling 360's to use HDMI cables for 1080P and we'll be right where we want to be.

Thanks again AVBill.


I'm glad I could help. I don't notice any A2000 lag personally (but obviously there is a measurable amount of lag present on all these microdisplays). It is too bad TV reviewers don't generally measure lag on these TVs (so we could better compare one to another).