127 posts since 29 Mar, 2008
Well, I'm on macOS 10.13.2, which contains the initial patch, and I have not seen a hit at all in any DAW related work. Diva, Repro, etc. are where I would expect them to be in terms of CPU usage.
Reports from the field on the Linux patch are that I/O heavy tasks like databases (Postgres, etc.) see a hit. Games running on GL are not seeing any hit, but given how the GPU plays into things, I wouldn't expect much of a hit. More telling is that FFMPEG video encoding tasks (non-GPU boosted) are NOT seeing a hit.
So I would venture that CPU-heavy / I/O-light tasks probably are fine. I doubt we will see a hit with DAW work. Here's hoping.
macOS 10.13.x | Ableton 10 | Bitwig 2.x | Reason 10
Akai MPK249 | Scarlett 6i6 v2 | Adam Audio T7V & Sub8
U-he everything | Komplete Ult. 11 | Serum | Steinberg Absolute 3 | Arturia V Coll. 5 | Fabfilter Pro all | countless others