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RonBurgundy · 02-15-2020, 08:08 PM

Thank you for your answers about deep color . I have another problem. I had gtx1070 and most of the time I was playing games in 30Hz=30fps or 50Hz=50fps if a game is not that demanding . Recently I bought rtx2070super ,sometimes , some games which are CPU heavy drops some frames to 50fps , so I would like to play them in 50Hz just like before to get that smooth image with a controller . With the new card for some reason 50hz acts like 60hz.
For example :
I made 2560x1440 and 3200x1800 detailed resolution with 50Hz. The problem is when I switch to created detailed res my TV reports that resolution 2560x1440 50hz was applied, but in reality something is not right , I can clearly see when slowly turning camera around that the image is not smooth , it's like 60fps capped to 50fps with a frame limiter or it's like some unusual refresh rate which TV doesn't support, I can clearly see that it's not native refresh rate. This only occurs when I select Display scaling in Nvidia control panel and detailed res, if I switch to GPU scaling the problem is gone ,or if I delete custom res, then 1440p is created out of 2160p native resolution automatically by the driver, the image is smooth in 50fps again. I had no such problems with my old gtx1070. Detail resolution + display scaling gave me the clearest picture .

uVSthem · (Last edited: 02-16-2020, 12:41 AM by uVSthem)

I’m wondering if there is anyway I can use CRU to help me with an issue I am having. My TV supports 4K at 60hz. The resolution of 3840 x 2160 runs at 60hz without any issues. I have GPU scaling turned on in my Nvidia control. For some reason all scaled resolutions only go up to 30Hz. If the GPU is scaling the resolutions to 4k, shouldn’t those support 60hz as well?

Here is a link to the TV.

https://www.vizio.com/m60c3.html

***ToastyX*** · 02-16-2020, 01:20 AM

(02-16-2020 12:37 AM)uVSthem Wrote: I’m wondering if there is anyway I can use CRU to help me with an issue I am having. My TV supports 4K at 60hz. The resolution of 3840 x 2160 runs at 60hz without any issues. I have GPU scaling turned on in my Nvidia control. For some reason all scaled resolutions only go up to 30Hz. If the GPU is scaling the resolutions to 4k, shouldn’t those support 60hz as well?

Here is a link to the TV.

https://www.vizio.com/m60c3.html

That depends on how it's getting 60 Hz. If the connection is HDMI 1.x and 60 Hz is YCbCr 4:2:0, then the GPU might only be scaling to non-4:2:0 refresh rates. If it's HDMI 2.x, then that shouldn't happen. Does CRU show HDMI 2.0 support in the extension block? If not, you might need to use a certain port on the TV (port 5 according to the specs), or you might have to enable some option on the TV to make it HDMI 2.x.

***ToastyX*** · 02-16-2020, 01:24 AM

(02-15-2020 08:08 PM)RonBurgundy Wrote: Thank you for your answers about deep color . I have another problem. I had gtx1070 and most of the time I was playing games in 30Hz=30fps or 50Hz=50fps if a game is not that demanding . Recently I bought rtx2070super ,sometimes , some games which are CPU heavy drops some frames to 50fps , so I would like to play them in 50Hz just like before to get that smooth image with a controller . With the new card for some reason 50hz acts like 60hz.
For example :
I made 2560x1440 and 3200x1800 detailed resolution with 50Hz. The problem is when I switch to created detailed res my TV reports that resolution 2560x1440 50hz was applied, but in reality something is not right , I can clearly see when slowly turning camera around that the image is not smooth , it's like 60fps capped to 50fps with a frame limiter or it's like some unusual refresh rate which TV doesn't support, I can clearly see that it's not native refresh rate. This only occurs when I select Display scaling in Nvidia control panel and detailed res, if I switch to GPU scaling the problem is gone ,or if I delete custom res, then 1440p is created out of 2160p native resolution automatically by the driver, the image is smooth in 50fps again. I had no such problems with my old gtx1070. Detail resolution + display scaling gave me the clearest picture .

That sounds like frame duplication, like if the TV were converting 50 Hz to 60 Hz, but if that were the case, that should happen with both video cards, so I don't know what's going on.

uVSthem · 02-16-2020, 01:58 AM

(02-16-2020 01:20 AM)ToastyX Wrote:
(02-16-2020 12:37 AM)uVSthem Wrote: I’m wondering if there is anyway I can use CRU to help me with an issue I am having. My TV supports 4K at 60hz. The resolution of 3840 x 2160 runs at 60hz without any issues. I have GPU scaling turned on in my Nvidia control. For some reason all scaled resolutions only go up to 30Hz. If the GPU is scaling the resolutions to 4k, shouldn’t those support 60hz as well?

Here is a link to the TV.

https://www.vizio.com/m60c3.html
That depends on how it's getting 60 Hz. If the connection is HDMI 1.x and 60 Hz is YCbCr 4:2:0, then the GPU might only be scaling to non-4:2:0 refresh rates. If it's HDMI 2.x, then that shouldn't happen. Does CRU show HDMI 2.0 support in the extension block? If not, you might need to use a certain port on the TV (port 5 according to the specs), or you might have to enable some option on the TV to make it HDMI 2.x.

HDMI 2.0 support is in the extention. I attached the exported setting and a screen shot of what I am looking at. I'm using port 5 on the TV. The PC is connected to my Onkyo receiver which is HDMI 2.0B and then passes the video to my TV but even when I connect the video card directly to the TV I have the same issue.

***ToastyX*** · 02-16-2020, 02:28 AM

(02-16-2020 01:58 AM)uVSthem Wrote: HDMI 2.0 support is in the extention. I attached the exported setting and a screen shot of what I am looking at. I'm using port 5 on the TV. The PC is connected to my Onkyo receiver which is HDMI 2.0B and then passes the video to my TV but even when I connect the video card directly to the TV I have the same issue.

The EDID you posted doesn't have 3840x2160 @ 60 Hz anywhere except as a 4:2:0 resolution. That's the problem. Add it as a detailed resolution or TV resolution, and remove the 4:2:0 resolutions data block. The TV should have already defined 60 Hz though if it supports HDMI 2.0, so something is amiss.

uVSthem · (Last edited: 02-16-2020, 02:59 AM by uVSthem)

I'll give it a try but I am pretty sure the TV only supports 4k at 4:2:0. I know for sure it cannot do 4k at 4:4:4. I'm not sure about anything in between.

(02-16-2020 02:28 AM)ToastyX Wrote:
(02-16-2020 01:58 AM)uVSthem Wrote: HDMI 2.0 support is in the extention. I attached the exported setting and a screen shot of what I am looking at. I'm using port 5 on the TV. The PC is connected to my Onkyo receiver which is HDMI 2.0B and then passes the video to my TV but even when I connect the video card directly to the TV I have the same issue.
The EDID you posted doesn't have 3840x2160 @ 60 Hz anywhere except as a 4:2:0 resolution. That's the problem. Add it as a detailed resolution or TV resolution, and remove the 4:2:0 resolutions data block. The TV should have already defined 60 Hz though if it supports HDMI 2.0, so something is amiss.

If I add it as a a detailed resolution the screen blanks out whenever Windows tries to reboot. As soon as it is time to display the desktop the screen goes blanks as if the the TV is getting an unsupported resolution.

Adding it to the TV resolutions results in 60hz being selected for scaled resolutions but if I to select 60hz for the said resolution the screen blanks out as if the mode is unsupported. Is this because the TV can only do 4k at 4:2:0?

***ToastyX*** · 02-16-2020, 03:22 AM

(02-16-2020 02:31 AM)uVSthem Wrote: If I add it as a a detailed resolution the screen blanks out whenever Windows tries to reboot. As soon as it is time to display the desktop the screen goes blanks as if the the TV is getting an unsupported resolution.

Adding it to the TV resolutions results in 60hz being selected for scaled resolutions but if I to select 60hz for the said resolution the screen blanks out as if the mode is unsupported. Is this because the TV can only do 4k at 4:2:0?

It doesn't make sense for a TV that supports HDMI 2.0 to not support at least YCbCr 4:2:2 at 60 Hz. YCbCr 4:2:0 only requires HDMI 1.4. The specs and manual are useless for finding out what the TV actually supports. It only says 4K @ 60 Hz requires port 5. Some TVs require enabling UHD color or some other option, but I don't see that in the manual.

uVSthem · 02-16-2020, 03:30 AM

I am sorry, you are right. It supports up to 4:2:2, not 4:2:0. There are no setting in the TV's menu for UHD color.

Does this help at all?

https://www.rtings.com/tv/reviews/vizio/...st-results

***ToastyX*** · 02-16-2020, 03:45 AM

(02-16-2020 03:30 AM)uVSthem Wrote: I am sorry, you are right. It supports up to 4:2:2, not 4:2:0. There are no setting in the TV's menu for UHD color.

Does this help at all?

https://www.rtings.com/tv/reviews/vizio/...st-results

It doesn't say how they got 4:2:2. It should be plug and play.