I'm having the same problem. Windows 10 Pro. Dell 5491 Core i7 16GB Ram, SSD.
@John Federico Sorry about that. What have you done to troubleshoot so far? Have you tested the same PC from a different network? Are you wireless currently?
I have exactly the same problem. I use a Dell Precision 5520 with 32GB RAM and Win10 1803. All VMs running in Hyper-V get extremely slow. It is quite embarrasing to do my Demos this way. If GTM is not active everything works fine.