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Good day. I was having a good time using lutris and steam for my games. usually I would set launch options in steam like mesa_glthread=true LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libgamemodeauto.so PROTON_NO_ESYNC=1 PROTON_USE_WINED3D=1 %command%

This will do a variety of things including setting the correct GPU.

 

I woud lie to know if something simular to this could be done on playonlinx and where I could do this?

Impossible because Playonlinux/Playonmac (v4) does not support Proton.