Attempted to run game with several combinations of other reporters' proposed arguments and tweaks of the Heroic Games Launcher (in its distro specific package app version), such as checking "Use Steam Runtime" option under the "Other" tab of the game settings menu, and adding the "Game Arguments" under the "Advanced" tab as follows: "-PROTON_FORCE_LARGE_ADDRESS_AWARE -PROTON_NO_D3D11" Which I'm unsure of it even working or being useful.