I tried doing manually a gamescope command line arguments for Overwatch and it didn’t work.

I activated the necessary flags and took close attention to the resolution in game and of my display, made sur the game had HDR enabled etc and it never worked.

So if I can’t get HDR to work even with gamescope on a stable game like OW…

But your tip to setup gamescope for the session is interesting. I might try that out sometimes.

But honestly HDR is quite anecdotal for me. It’s not that visible. I much prefer to focus on optimizing FPS and input delay than tweaking for HDR.