I use KCPM. It works really well and does a proper job of repairing permissions.
I just installed 10.13.2 and it's working way better.
The whole deal seems smoother and less prone to crashes, but the biggy is the vega FE. Finally it's as fast as in Windows and there are no GPU crashes in any software.
I delidded my 7900x and it's stable and running cool at 4.9Ghz.
So for anyone who is waiting for a stable High Sierra it's very close.
What were your temps at stock before delidding versus after? I just got my 7900X working (ASRock X299 board) and stock temps seem fine with my H115i, but not anything higher. I am trying to decide if I should delid as well.
How did you delid btw? I see there is some "kit" when I google.
By the way, for some reason I have to use one of Pike's kernel patches of XCPM_core_scope (just NOP'ed) in order to boot, otherwise it is cpus=1 land, even after changing a million BIOS settings.
Once I have that one patch, then BIOS can be at default settings and I get nice clean consistent performance at max multiplier.