I found that after I cleaned out "Dead" mods that haven't been updated yet it leaves all the mods enabled. No enable all button, but at least it was only a one-time slog.
You have to remove 1) immersive UI 2) Mod Fixer 3) any mods that will not LET you check the box in-game (these don't have the necessary code updates for PATCH 7 yet)
Since then, my game has run perfect.