What is PortProton doing that could increase performance? At the end of the day, won't this tool just set up a wineprefix for your game and then launch it using wine/proton, just like other tools of this nature?
If you need to remember something for the next time you go out, put your shoes somewhere odd. When you go to leave, you'll remember you moved them, which will remind you why you moved them.
Someone with root can run ostree admin unlock --hotfix to make /usr writable. Someone with root can also delete all restore points.
See the comment by superkret.