Lego Batman 2 flashing textures

been trying to get lego batman 2 from epic working on my steamdeck, I can get the game to launch fine but there is alot of missing/flashing textures and visual artifacts, which leads me to believe im missing some prerequisites like DirectX, I was watching this video: https://www.youtube.com/watch?v=_MlHNF-ueXg and it seems like the solution to my issue could be very similar but im getting stuck with the fact that changing the target and launch options in steam to the directx installer and back to the default that heroic automatically setup doesnt seem to work, the game wont launch after that.
YouTubeMonroeWorld
Installing non-Steam games can be a real challenge; especially if they have requirements necessary for them to run correctly (or run at all). In this video, I'll show you the process of adding a GOG non-Steam game into Steam - figuring out its missing dependencies and finally, fixing the game to run properly.

Every game is different, but with ...
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