The strongest and safest way to play this game with online will be installing this on your internal, making sure that Proton EAC is installed and on top of it you only need to run the basic proton that is being recommended. My configuration and this current report mostly talks about how I basically tried to go the other way around, by trying to play the game with GE which according to people in the discussions board say it works, doesn't work for me therefore trying to play the game multiplayer will give me integrity violations. My friend's SD having it in internal meanwhile works very well with online, but with huge performance problems. On my deck itself running through areas I'm always running medium and jumping between the 40-50, sometimes jumping to the 60s.

Being forced to having to install this game on your internal storage sounds very unnecessary, and this is the first time I hear that because you need to have the game installed on the internal then the online could work.

In my case i'm keeping it on my SD since I play only the campaign on the go, but that's a huge bummer for me.