The problem I have had with Proton GE, is that some updates (two for me so far) had broken my racing wheel support. Took quite a bit of messing around before I tried reverting to a previous version, and then all worked again. So yes, for Proton GE I stay on an existing version, and only move to a newer version if I have some new game, and it does not run on the Proton GE version I’m using.