It works just fine for me. What are the steps that you did?
I use nix so:
I installed OBS with all the plugins especially obs-vscapture
Run OBS and add Game Capture Source
Using lutris I enabled gamescope and changed the game resolution to something higher. I have a 1440p display so I tried 2560x1600 (16:10) to make sure I'm capturing it right.
Inside Lutris System Options game options tab I added OBS_VKCAPTURE and set it to 1.
When I run the game I can see gamescope is working as it's projecting a 16:10 game onto my 16:9 screen.
Inside OBS I can see the game capture is working and when I select the Game Capture source it shows that it's a bit too tall for my display.
Should be a similar thing for you, I would try something obvious like 16:10 first so you can get immediate visual feedback and then tweak your settings from there.
I had a 3060 and the support for wayland was just terrible.
Loads of games didn't work on proton or ran terribly.
Moment I switch to AMD on Linux I have not had any crashes, and games run out of the box with good performance.
Just my experience, there is no real reason why most people need nvidia GPUs on Linux. The vram is small, and prices often don't compete well with AMD.
CUDA and other media stuff is usually a strawman as most people literally never it. If you need that desktop with SSH is much better value for money.
Have you tried using nix-hardware repo? They have some device specific configs that apply.
If you are, have you tried doing it "raw" in the configs instead?
Also if you are using an AMD CPU, smokeless UMAF has more BIOS options, and you can try enabling/disabling modern standby as well as a LOT of other power options.
It works just fine for me. What are the steps that you did?
I use nix so:
obs-vscaptureGame CaptureSourceSystem Optionsgame options tab I addedOBS_VKCAPTUREand set it to1.Game Capturesource it shows that it's a bit too tall for my display.Should be a similar thing for you, I would try something obvious like 16:10 first so you can get immediate visual feedback and then tweak your settings from there.