MAC STEAM SETTINGS: GPU BLOCK LIST DO NOT DISABLE (High Sierra here)

[onefoe1]

If you do anyways and then Steam loads into a black screen and you lose menu and then you don't want to have to reinstall and search all over the internet for solutions that tell you how to use a menu you cannot see...
Go to: USERS>[you]>Library>Application Support>Steam>Registry.vdf then edit using text edit change the "1" to "0" SAVE.
Launch Steam
Review and repeat as necessary.