Well one of the killers I found very recently was if you open the console of the VM before it has booted it sets the caps lock on which instantly shafts entry of the grub commmand line so initial configuration of that is pissing in the dark because you can’t observe it without affecting it.
Then there’s the periodic refusal to talk on the network even if the virtual switches are configured properly.
Then the inexplicable “slow boot from hell” which happens randomly where it’ll just hang starting up the kernel at 0% CPU for up to 8 minutes.
At least for me, using Hyper-V is problematic because I can't also run VMware Workstation at the same time. I have to boot into different configurations to run them side-by-side. My macOS experience is that running both on your machine is straightforward.
