Steam Deck OLED / Proton: RenoDX add-on causes flashing artefacts in multiple games (DX9 Linux bug?)

[Freewheelin123]

System

Device: Steam Deck OLED

OS: SteamOS

Runtime: Proton

ReShade: full add-on support build

Display mode tested: Game Mode and Desktop Mode

The games I tested with their respective add-on mods: Blur, Mirror's Edge

When the RenoDX add-on is present, the game image flashes and shows visible mouse trail or ghosting artefacts.
When the RenoDX add-on is removed from the game folder, the flashing stops.

This reproduces across multiple games, which suggests it may be a broader Proton/Linux compatibility issue with the ReShade add-on HDR path rather than a single game-specific install problem.

[clshortfuse]

I believe it's related to this: doitsujin/dxvk#5314

I might be able to block some DX9 stuff to avoid conflicts, but a more focused DXVK patch is probably the better long term solution.

[Freewheelin123]

Ok thank you, will keep an eye out for any solutions