Hunt: Showdown isn’t a casual shooter though

Mmh it still does it’s job, but a huge shame they removed that feature

You can still send text messages in Signal, or is this a modded app?

Steam Deck runs an embedded session of Gamescope which uses DRM (no not copy protection) to display games.

Running Gamescope as a launch command will run it in a nested session, where it’s output is being sent to your display manager, ex. Kwin. That’s where the lag can happen, and usually does especially in GPU bound scenarios

Gamescope will add input lag which is something you don’t want to have in a game like CS2