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Old 13th March 2019, 00:22   #55301  |  Link
tp4tissue
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Quote:
Originally Posted by Asmodian View Post
You have the GPU not using "Optimal Power" in 3D Settings? Don't use FSE. Do you have a Gsync or Freesync display? Also make sure Windows 10's Focus Assist is completely disabled, including the other options on that config page, even though they don't seem like they would cause problems they do seem to.

Windowed Overlay is also something to try.

Sorry if you already tried those.
Do we have a table of On-Off features for optimal Madvr performance ?

So we WANT -optimal power- ?

and

DO NOT Want -focus assist-
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Old 13th March 2019, 00:41   #55302  |  Link
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No, we DO NOT want Optimal Power or Focus Assist, both cause hitching without the average rendering times being too high.
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Old 13th March 2019, 01:23   #55303  |  Link
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We should really get these basic and often posted troubleshooting answers stickied.. Could just create a registry file to make it easy for these to be set also.
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Old 13th March 2019, 03:39   #55304  |  Link
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Originally Posted by Asmodian View Post
No, we DO NOT want Optimal Power or Focus Assist, both cause hitching without the average rendering times being too high.

GDI, so we want prefer maximum performance ?

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Originally Posted by ryrynz View Post
We should really get these basic and often posted troubleshooting answers stickied.. Could just create a registry file to make it easy for these to be set also.
Or just u know, like the driver recommendation thread.
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Old 13th March 2019, 04:04   #55305  |  Link
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GDI, so we want prefer maximum performance ?
No, Adaptive is the preferred option.
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Old 13th March 2019, 05:15   #55306  |  Link
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I like adaptive myself, it clocks all the way down pretty fast, but not so fast as to ever disturb madVR.

However, anything besides Optimal Power works fine.
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Old 13th March 2019, 08:06   #55307  |  Link
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Is 419.17 bugged again with 10bit HDR ? it only uses 8 bit windowed mode and Full Screen does newest driver fix it ? 419.35 ?
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Old 13th March 2019, 10:09   #55308  |  Link
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Is 419.17 bugged again with 10bit HDR ? it only uses 8 bit windowed mode and Full Screen does newest driver fix it ? 419.35 ?
Looking back on your posts the majority seem to be about newer drivers and HDR.

If you do not need the newer drivers for Games etc. stay with whats working, and also drivers after 398.11 are sending the wrong HDR metadata either way.

https://forum.doom9.org/showthread.p...44#post1865444

https://forum.doom9.org/showthread.php?t=176013
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Last edited by madjock; 13th March 2019 at 10:16.
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Old 13th March 2019, 10:22   #55309  |  Link
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I always run full screen exclusive on this system since it only has one display and watching is all I will be doing on it.
Not sure what you mean here, its a setting under rendering->general settings. You can enable it even when using multiple monitors. I had gone through the whole cycle of fresh windows, old/new versions of drivers/madvr/lav, adaptive power in nvidia, turning off game mode+focus assist etc etc. The only thing that fixed it for me was fullscreen exclusive mode. Been using it for about 6 months now without any significant issues.
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Old 13th March 2019, 10:33   #55310  |  Link
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Originally Posted by x7007 View Post
Is 419.17 bugged again with 10bit HDR ? it only uses 8 bit windowed mode and Full Screen does newest driver fix it ? 419.35 ?
Works fine for me on 419.35 (and 419.17). I use default color settings on nvidia cp. It goes into 8bit hdr if its 4k@60, otherwise goes into 12bit which I have confirmed with my receiver.

In fact everything related to bit depth is working well for me now. For normal 1080p23, 2160p23 files I get 12bit output and 4k@60 (for normal desktop usage) I get 8bit.
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Old 13th March 2019, 10:37   #55311  |  Link
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Does the user snowknight have the vega 56 or 64 ?
I don't know, I couldn't find it.
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Old 13th March 2019, 10:47   #55312  |  Link
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Originally Posted by Nicog View Post

I tried also almost everything. Sometimes FSE works, sometimes not (I don't know why!)
![/U]
When you experience stuttering, press Ctrl+J to see if FSE is even enabled. Sometimes fse fails when I try to use other windows on my pc monitor and something is playing on the TV. As soon as FSE fails, the stuttering returns on my setup.
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Old 13th March 2019, 11:08   #55313  |  Link
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When you experience stuttering, press Ctrl+J to see if FSE is even enabled. Sometimes fse fails when I try to use other windows on my pc monitor and something is playing on the TV. As soon as FSE fails, the stuttering returns on my setup.
Hi, thanks for your help but this I already checked - and impossible to miss it as I use a videoprojector (JVC X7900), which is really painful to use in FSE...

I tried also all what Asmodian suggested - without any success. But I just tried separatly - I have to try also all together.
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Old 13th March 2019, 11:38   #55314  |  Link
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Yes I agree. Since it was an incremental process and FSE finally fixed it for me, I might be ignoring the other fixes that helped me resolve the problem. So here goes from memory, just to summarize on what I had to do for my 2080ti (after upgrading from a 1080).

Fresh Windows 1809, fully updated, with game mode and Focus assist off (including all focus assist settings off, not just the main one).
Nvidia latest (now 419.35), adaptive power, default color space (rgb full works too without stuttering). Using Freesync on my PC screen without issues on displayport. TV connected on hdmi.
Madvr even default settings needs FSE.
Lav dxva2 copyback
I also had to disable my onboard realtek audio in bios and uninstall its drivers, otherwise i was getting spikes in madvr processing occasionally.

Cant think of anything else really.
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Old 13th March 2019, 13:32   #55315  |  Link
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Originally Posted by austinminton View Post
Works fine for me on 419.35 (and 419.17). I use default color settings on nvidia cp. It goes into 8bit hdr if its 4k@60, otherwise goes into 12bit which I have confirmed with my receiver.

In fact everything related to bit depth is working well for me now. For normal 1080p23, 2160p23 files I get 12bit output and 4k@60 (for normal desktop usage) I get 8bit.
ye I am talking about 4K60 . it doesn't go to 10 bit like it suppose . if I choose YcbCr 4:2:2 10 bit then it works fine without randomly white dots.
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Old 13th March 2019, 14:21   #55316  |  Link
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4k60 RGB (or ycbcr 4:4:4) cant go to 10bit due to hdmi 2.0 bandwidth limitations. Not very sure if displayport can do it. White dots does sound like a cable issue?

Last edited by austinminton; 13th March 2019 at 14:28.
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Old 13th March 2019, 14:30   #55317  |  Link
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Originally Posted by austinminton View Post
4k60 RGB (or ycbcr 4:4:4) cant go to 10bit due to hdmi 2.0 bandwidth limitations. Not very sure if displayport can do it. White dots does sound like a cable issue?
4K60 4:4:4 runs at 17.82Gbps, but only with the default 8-bit BT.709 color. That’s the same color gamut as 720p and 1080i/p. The whole point of HDR is to increase color volume, which it can’t do unless there’s first an increased color gamut. That means stepping up to BT.2020, which in turn means 10- or 12-bit deep color. The HDMI 2.0 spec also calls for a minimum 10-bit color with BT.2020.

Here's how it stands...

Main + 2 sides;
(Remember it has to be under 18Gbps…)

4K 60 4:4:4 (no HDR) = 17.82Gbps

4K 30 4:4:4 10b-HDR (no 60fps) = 11.14Gbps

4K 60 4:2:2 10b-HDR (no 4:4:4) = 17.82Gbps

Main + 3 sides;

4K 60 4:4:4 10b-HDR = 22.28Gbps
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Old 13th March 2019, 15:37   #55318  |  Link
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4K60 4:4:4 runs at 17.82Gbps, but only with the default 8-bit BT.709 color. That’s the same color gamut as 720p and 1080i/p. The whole point of HDR is to increase color volume, which it can’t do unless there’s first an increased color gamut. That means stepping up to BT.2020, which in turn means 10- or 12-bit deep color. The HDMI 2.0 spec also calls for a minimum 10-bit color with BT.2020.
4K60p 4:4:4 can only run in 8bits, so 12bits isn't an option for that.

The HDMI 2.0 specs doesn't call for 10bits with BT2020. I send RGB 8bits with BT2020 without any problem. The gamut used doesn't have any effect on the bandwidth. Bit depth does.

For the content, UHD Bluray specs call for 10bits if PQ Gamma (and usually BT2020) is used, but that's a content spec, not a HDMI spec for playback.

MadVR can tonemap and dither 10bits BT2020 content to 8bits BT2020 without any added banding (at least when using pixel shader tonemapping, I have checked this using passthrough). It's perfectly valid to do so and it does limit the necessary bandwidth to a max of 300Mhz at 4K60p with no visible loss of picture quality if using the correct settings in GPU/madVR, which can be useful in some situations.

It also impacts performance, as processing 12bits takes more resources than processing 8bits.

12bits causes a lot of issues with nVidia recent drivers, especially with madVR custom refresh rates and NV HDR switching, so using 8bits can also help with that.
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Last edited by Manni; 13th March 2019 at 15:41.
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Old 13th March 2019, 15:47   #55319  |  Link
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I like adaptive myself, it clocks all the way down pretty fast, but not so fast as to ever disturb madVR.

However, anything besides Optimal Power works fine.
Does setting it in global vs application specific make a difference ?
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Old 13th March 2019, 16:05   #55320  |  Link
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Application specific overrides the global setting. But in most cases this value is not set in application specific settings. You can see with Nvidia Profile Inspector tool.
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