I think this is going to end up being a super niche issue. I have a Mac Pro 6,1 with a 12 core 2.7ghz Xeon E5, 64gb ram.
I installed Monterey 12.6.3 on it as well as VMWare Fusion. Created a few VM's. One Windows 10, one OSX 10.10, one 10.15.7
All three VM's have trash network throughput...