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13th March 2019, 00:22 | #55301 | Link | |
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So we WANT -optimal power- ? and DO NOT Want -focus assist-
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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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13th March 2019, 03:39 | #55304 | Link | |
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GDI, so we want prefer maximum performance ? Or just u know, like the driver recommendation thread.
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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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13th March 2019, 10:09 | #55308 | Link | |
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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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13th March 2019, 10:22 | #55309 | Link |
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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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13th March 2019, 10:33 | #55310 | Link | |
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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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13th March 2019, 10:37 | #55311 | Link |
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I don't know, I couldn't find it.
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13th March 2019, 10:47 | #55312 | 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.
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13th March 2019, 11:08 | #55313 | Link | |
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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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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. |
13th March 2019, 13:32 | #55315 | Link | |
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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. |
13th March 2019, 14:30 | #55317 | Link | |
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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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13th March 2019, 15:37 | #55318 | Link | |
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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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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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