Parallels pointed an upgrade to me a couple of months ago and I have been using this setup successfully.
I have been very careful not to download every Altium update there is so I may be a few minor releases behind but this system is pretty stable.
MBP 16" 32GB MacOS 11.2.1
Parallels 16.1.3 (4916)
Configured for Games Only
Adaptive Hypervisor Checked
Always Use High-Performance Graphics Checked
Altium 20.2.6 (Build 244)