Screen flickers black repeatedly when activating performance overlay outside of a game

When I enter Game Mode and enable a performance overlay while not ingame, the screen starts rapidly going black and coming back.
If I manage to disable the overlay before the signal completely drops, the screen instantly returns to normal.


System Info:

OS: Bazzite Deck (42.20251002, stable)
GPU: AMD Radeon RX 6900 XT

rpm-ostree status:
sven@bazzite:~$ rpm-ostree status
State: idle
Deployments:
● ostree-image-signed:docker://ghcr.io/ublue-os/bazzite-deck:stable
Digest: sha256:a71acae6911bd634417800d73e4d3576445295d841d98ce3e584a07806f4edbc
Version: 42.20251002 (2025-10-02T17:16:10Z)
LayeredPackages: xpra
LocalPackages: corectrl-1.5.1-2.fc43.x86_64 goxlr-utility-1.2.2-1.x86_64


Steps to reproduce:

Boot into Game Mode.
Open Quick Access and enable the performance overlay.
(No game running) — screen starts blinking black repeatedly.
Disabling the overlay immediately fixes it.
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