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***ToastyX*** · 03-26-2022, 12:50 AM

(03-25-2022 07:16 PM)SPEED Wrote: I bought a displayport 1.4 to hdmi 2.1 cable to just see if i can solve my problem with my lg tv 4k 120hz and Radeon 5700xt. Has anyone here managed to get VVR or Freesync to work using the same combination?

DisplayPort adaptive sync and HDMI 2.1 VRR are two different protocols. You need an adapter that is specifically designed to convert DisplayPort adaptive sync to HDMI 2.1 VRR.

SPEED · 03-26-2022, 12:32 PM

(03-26-2022 12:50 AM)ToastyX Wrote:
(03-25-2022 07:16 PM)SPEED Wrote: I bought a displayport 1.4 to hdmi 2.1 cable to just see if i can solve my problem with my lg tv 4k 120hz and Radeon 5700xt. Has anyone here managed to get VVR or Freesync to work using the same combination?
DisplayPort adaptive sync and HDMI 2.1 VRR are two different protocols. You need an adapter that is specifically designed to convert DisplayPort adaptive sync to HDMI 2.1 VRR.

I thought i'l give it a try. Unfortunately nobody has build such a cable yet. Still, it's strange that any custom resolution at 4k don't work. I can get custom resolutions at 2k but nothing at 4k with hdmi cable or with the adapter cable.

Mr4ssault · 03-26-2022, 12:54 PM

(03-26-2022 12:50 AM)ToastyX Wrote:
(03-25-2022 10:33 PM)Mr4ssault Wrote: thats weird why can i do it in nvidia config screen then without issues
I can't explain anything if you won't show me what you're doing.

here are some screenshots from my settings [Image: g7pyPFn]

***ToastyX*** · 03-26-2022, 04:34 PM

(03-26-2022 12:54 PM)Mr4ssault Wrote: here are some screenshots from my settings
https://imgur.com/a/g7pyPFn

You said it works with the NVIDIA control panel, so show me what you're doing with the NVIDIA control panel.

***ToastyX*** · 03-26-2022, 04:35 PM

(03-26-2022 12:32 PM)SPEED Wrote: I thought i'l give it a try. Unfortunately nobody has build such a cable yet. Still, it's strange that any custom resolution at 4k don't work. I can get custom resolutions at 2k but nothing at 4k with hdmi cable or with the adapter cable.

You should be able to add 4K custom resolutions. What is the pixel clock of the resolutions you're trying to add? HDMI 2.0 has a pixel clock limit of 600 MHz. Is the driver still applying that limit with HDMI 2.1? That shouldn't even apply with a DisplayPort adapter anyway, so that would be a driver bug.

Mr4ssault · 03-26-2022, 04:47 PM

(03-26-2022 04:34 PM)ToastyX Wrote:
(03-26-2022 12:54 PM)Mr4ssault Wrote: here are some screenshots from my settings
https://imgur.com/a/g7pyPFn
You said it works with the NVIDIA control panel, so show me what you're doing with the NVIDIA control panel.

here is a screenshot of my custom res in nvidia control panel which works perfectly fine but has tons of inupt lag that's why i want to use cru. https://imgur.com/a/rER4riS

***ToastyX*** · 03-26-2022, 06:21 PM

(03-26-2022 04:47 PM)Mr4ssault Wrote: here is a screenshot of my custom res in nvidia control panel which works perfectly fine but has tons of inupt lag that's why i want to use cru. https://imgur.com/a/rER4riS

That's a GPU-scaled resolution. The active resolution is still 2560x1440. If you change the timing standard to CVT reduced blank, you should see the same split screen problem if your monitor can't handle the resolution.

Mr4ssault · (Last edited: 03-26-2022, 09:39 PM by Mr4ssault)

(03-26-2022 06:21 PM)ToastyX Wrote:
(03-26-2022 04:47 PM)Mr4ssault Wrote: here is a screenshot of my custom res in nvidia control panel which works perfectly fine but has tons of inupt lag that's why i want to use cru. https://imgur.com/a/rER4riS
That's a GPU-scaled resolution. The active resolution is still 2560x1440. If you change the timing standard to CVT reduced blank, you should see the same split screen problem if your monitor can't handle the resolution.

yes your right but why can i run on native 2560x1440 @180hz then and it says display scaling in nvidia control panel

(03-26-2022 06:21 PM)ToastyX Wrote:
(03-26-2022 04:47 PM)Mr4ssault Wrote: here is a screenshot of my custom res in nvidia control panel which works perfectly fine but has tons of inupt lag that's why i want to use cru. https://imgur.com/a/rER4riS
That's a GPU-scaled resolution. The active resolution is still 2560x1440. If you change the timing standard to CVT reduced blank, you should see the same split screen problem if your monitor can't handle the resolution.

so if i run native 2560x1440 @180hz and display scaling in nvidia control panel its still gpu scaling?

(03-26-2022 09:19 PM)Mr4ssault Wrote:
(03-26-2022 06:21 PM)ToastyX Wrote:
(03-26-2022 04:47 PM)Mr4ssault Wrote: here is a screenshot of my custom res in nvidia control panel which works perfectly fine but has tons of inupt lag that's why i want to use cru. https://imgur.com/a/rER4riS
That's a GPU-scaled resolution. The active resolution is still 2560x1440. If you change the timing standard to CVT reduced blank, you should see the same split screen problem if your monitor can't handle the resolution.

yes your right but why can i run on native 2560x1440 @180hz then and it says display scaling in nvidia control panel

(03-26-2022 06:21 PM)ToastyX Wrote:
(03-26-2022 04:47 PM)Mr4ssault Wrote: here is a screenshot of my custom res in nvidia control panel which works perfectly fine but has tons of inupt lag that's why i want to use cru. https://imgur.com/a/rER4riS
That's a GPU-scaled resolution. The active resolution is still 2560x1440. If you change the timing standard to CVT reduced blank, you should see the same split screen problem if your monitor can't handle the resolution.
so if i run native 2560x1440 @180hz and display scaling in nvidia control panel its still gpu scaling?

So all i want to say is when i go back to native in nvidia control panel, and select no scaling and display scaling, its display scaling or gpu scaling then i really can't play with tons of input

***ToastyX*** · 03-26-2022, 10:49 PM

(03-26-2022 09:19 PM)Mr4ssault Wrote: so if i run native 2560x1440 @180hz and display scaling in nvidia control panel its still gpu scaling?

The native resolution is not scaled. I was talking about the custom resolution. You created a GPU-scaled custom resolution with the NVIDIA control panel. You told it to scale 2360x1440 to 2560x1440 because you didn't change the active resolution, so the monitor sees 2560x1440, which is why it displays correctly. CRU created a resolution that's sent to the display, so the monitor sees 2360x1440, but apparently your monitor is not displaying that correctly.

filmgeek47 · 03-27-2022, 02:52 AM

I understand the basic workings of CRU, but I’ve never been able to figure out how people actually deduce what timing info to put in on their respective monitor/refresh rate.

Currently trying to setup 23.976 playback at 4k for MADVR, but MadVR’s custom timing optimization isn’t appearing for me, so I’m stuck figuring it out manually. Could someone point me in the right direction?