OpenGL & Vulkan

[a0193143]

Since 22.7.1's majar OpenGL driver update, performance does improved.
But some issues still bother me, like title said.

I use RTSS' framerate limit or scanline sync for low latency without screen tearing.
And I noticed when using scanline sync, even fps is smooth, there's lots of stutter like just 30 fps; as for framerate limit, not only the stuttering, bit also visible screen tearing.
Sometimes if fps capping disabled, screen tearing is disappeared, instead.

Another problem is refresh rate couldn't hold at other than the one used at boot, if open OpenGL games in fullscreen the refresh rate would just revert.
For example, I set the refresh rate to 60Hz, after reboot, set to 75Hz, open any OpenGL game, refresh rate would just revert to 60Hz, very annoying.

So I have to switch the OpenGL driver dll to 22.5.1 version to eliminate those problems.

OS: Windows 10 LTSC 2021
CPU: Ryzen 5600X
GPU: RX 5600 XT

[dipak]

Hi @a0193143 ,

Thanks for reporting the issue. I have moved the post to the OpenGL forum and whitelisted you for the AMD Devgurus community.

To reproduce the issue locally, it would be helpful if you please provide the following information:

1) driver information, 2) any screenshot or video that demonstrates the issue, 3) the OpenGL games that you used

Note, the latest driver is available here: https://www.amd.com/en/support/graphics/amd-radeon-5600-series/amd-radeon-rx-5600-series/amd-radeon-...

Thanks.

[a0193143]

Driver information:

Games/Programs: osu!, osu!lazer, FurMark

First issue happend randomly after I alt-tab to another program, have to restart the game.

Reproducing video of the second issue:
https://youtu.be/Cj8Ym_atAPg

[dipak]

Thanks for the above information. We have filed a bug ticket to track the issues.

Thanks.

[a0193143]

It seems the refresh rate issue fixed in 23.7.1, but enabling RTSS's fps limiter often led driver crashing.

[dipak]

Thanks for sharing this observation. I have informed the relevant team about it.

Thanks.

[a0193143]

Sometimes the refresh issue still occured, but could be fixed by restarting the driver by the tool provided with custom resolution utility.

[dipak]

Thanks for the information.