AVX/AVX2 is the problem they're facing right now. I believe someone is trying to create some type of emulator, though, to get around this. That's just 1 of many problems, there is no USB 1 or Ethernet support, among other things. I do hope that they can get it running stably but if they do I think performance is going to take a big hit, if you're needing to run an emulator on top of most things you aren't going to see performance similar to Monterey, it's gonna take a hit.