Gamescope noob questions

I'm new to Linux gaming and have a bunch of questions about gamescope.

Please let me know if this isn't the right place for this kind of post... I realise most of these questions are not Bazzite specific

When should I use or not use gamescope? Should I default to not using, and only use it if I'm experiencing performance issues, or visa versa?
Why do I need to tell gamescope things like what my desktop resolution is, or whether to enable HDR? Can it not detect these things?
I have an RDNA4 GPU so I'm keen to leverage FSR4. I've seen several different methods for doing this at different times. Is there a recommended or canonical path to this in Bazzite? So far I've not had much luck getting it to work in Hell is Us. I can enable it in the settings, but it doesn't seem to have any positive impact on performance (unlike in Windows)
Will FSR4 "just work" (like in Windows) with updates in the forseeable future?

Thanks

AirstrikeITA•11/27/25, 7:23 PM

Use scopebuddy

AirstrikeITA•11/27/25, 7:23 PM

also, generally speaking, if a game works fine out of the box with all the features you want then don't even bother with gamescope, it is a bit buggy since Valve developed it exclusively gamemode usage (if you're using bazzite gamemode then no problem)

AirstrikeITA•11/27/25, 7:24 PM

gamescope is mostly just to get hdr working and a few other minor things

AAirstrikeITA gamescope is mostly just to get hdr working and a few other minor things

HikariKnight•11/29/25, 3:22 AM

its used for these things

Enable HDR in games
Upscaling of games using FSR1 (as FSR1 can be applied to games that dont support FSR)
Lock cursor into the game unless you alt+tab
Fix games having odd behavior with alt+tab (like some games crash when alt tabbing, but does not when using gamescope)
Fix odd issues with some games (ex: gamescope somehow removes the 1px white border around the helldivers 2 game window)

bazzite also comes with scopebuddy which is a bridge script that makes it less of a hassle to use gamescope on the nested desktop and allows setting global settings for gamescope and per game settings.

gamemode runs inside gamescope already so scopebuddy will detect that and just launch the game normally when it detects gamemode is active (as you cannot run gamescope inside gamescope).

gaddafiduckOP•11/29/25, 10:02 AM

Thanks both!

Gamescope noob questions

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