HTPC - New 4k TV, New Headaches! - Help needed! - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 5 Old 05-02-2019, 10:14 AM - Thread Starter
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Exclamation HTPC - New 4k TV, New Headaches! - Help needed!

Hello!

I recently couldn't resist and bought a Vizio P Quantum (65") - probably against my better judgment since I have been waiting for a good deal on an LG C8 to replace my Living Room's LG Cinema 60" (Love that TV for movies! <3)

Attached to my old TV I had:
Pioneer Elite SC-71 7.1 Receiver (should support 4k UHD!)
XB1
PS4
and my Media PC (i5, low power, super quiet).

I replaced my media PC with a much more powerful Xeon setup from my old gaming rig, and put a new nVidia GT 1030 that again, should support 4k video no problem.

I hooked up my new TV to my receiver, and I found out that there's lag ... from my Media PC and It only recognizes the Vizio TV as 4k 30Hz.
There's a noticeable lag on the mouse and everything that I do, there's a feeling of lag/stutter when I play 4K content as well.

At this point (And I haven't monkey'd with it much) but It must be either the receiver or the video card not doing a good job. So I don't really feel like replacing either unless I absolutely have to.

The Vizio has enough HDMI inputs, so I was thinking.... would it be possible to just run homeruns from my source devices to my TV and then run the HDMI ARC to my receiver?

Suggestions are welcome!

Max.
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post #2 of 5 Old 05-03-2019, 07:25 AM
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Hi Max,
I don't think your AVR will accept 4k/60. I checked the manual for you, found here: https://www.pioneerelectronics.com/S...tions04121.pdf

On page 25, read the About HDMI. It looks like it will accept 4k/24, 4k/25, and 4k/30.
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post #3 of 5 Old 05-03-2019, 07:30 AM - Thread Starter
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Aww nuts! .... Well, the odd thing is... that I tried plugging my HTPC directly to the TV, it still does not allow anything higher than 4k/30Hz . However, it does then display the option to switch on HDR.
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post #4 of 5 Old 05-03-2019, 10:35 PM
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Quote:
Originally Posted by Max Bredfeldt View Post
Aww nuts! .... Well, the odd thing is... that I tried plugging my HTPC directly to the TV, it still does not allow anything higher than 4k/30Hz . However, it does then display the option to switch on HDR.
You need to enable full uhd color under input settings for your tv connected to the PC for 4k @60fps . All hdmi inputs but #5 support hdr btw. I have the pq65 along with a 1080ti. No issue with lag. On a side note just received a new firmware update and this tv is unbelievable now.
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post #5 of 5 Old 05-07-2019, 07:11 AM - Thread Starter
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Angry

Thank you for that.
I'm coming from an LG Cinema (5 years old) that I think was absolutely incredible. The PQ has been nothing but trouble so far.
I went ahead and replaced the 1030 with a 1660 TI, connected the HTPC directly to the TV, and a lot of the lag is gone, but it's still noticeable.
I've setup the HDR/Input accordingly (also on XB1).
Whenever I have HDR Content on, it's incredibly hazey. Not just 'oh, a bit of haze' but like... literally hard to see, giant screen-wide halos, and it seems like the contrast drops by a lot. On XB1 it's not as bad, however, the reds and purples are eye-piercingly intense, the intense blues and reds seem to have artifacts.
I went ahead and tried replicating the calibration settings from rtings for this panel but honestly... I'm far from impressed. I have my 'old' LG 60LA7400 side to side and HDR aside, the LG blows this out of the water.

I'd really, REALLY appreciate some advice from you here.
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4k video , hdmi , mhtpc , nvidia gt 1030 , vizio p series quantum

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