protontricks 223750 d3dcompiler_47

First things first, try starting the game and selecting the Launch DCS World Steam Edition in OpenXR Mode - if that doesn't work, perhaps consider doing these steps:

I had to do the following to be able to play the game:

• Run protontricks: protontricks 223750 d3dcompiler_47
• Create a symlink for webrtc_plugin.dll: ln -s ${GAME_INSTALL_DIR}/bin/webrtc_plugin.dll ${GAME_INSTALL_DIR}/webrtc_plugin.dll
• Set launch options on Steam: WINEDLLOVERRIDES='wbemprox=n' %command%
• Set compatibility to Proton Experimental

I have ran the steps above before discovering that the game works for me in OpenXR Mode, so these might not be necessary.