OBS game capture

Install OBS VkCapture plugin from Flathub

Modify run arguments of the game by prefixing them with obs-gamecapture

Steam game:

obs-gamecapture %command%

Proton game running via Running Windows games via Proton without going through Steam or Lutris method:

obs-gamecapture $STEAM_COMPAT_CLIENT_INSTALL_PATH/compatibilitytools.d/$TARGET_PROTON_VERSION/proton run "$SCRIPT_DIR/$PROGRAM_NAME" "$PROGRAM_ARGS" & disown