From what I’ve read it’s been mostly disk I/o that’s suffered and mostly in extreme cases, using SSD or NVME m.2 drives. Most DAW users shouldn’t see a performance drop in real life.
On the other hand it seems that Intel didn’t put out great BIOS patches so there’s probably more to come, which could mean worse performance. For us AMD users the only patch we’ve seen so far that’s actually been distributed is the Windows patch.