Use ProtonQT to install GE-Proton9-4 then run command line sudo sysctl -w kernel.split_lock_mitigate=0 in the linux terminal. After that restart steam to load in GE that you installed via ProtonQT. Then, input the command line thats highlighted above (gamemoderun %command%) (ofc without the parentheses) in the steam launch options. Once these are done, should run fine with no crashes.