So this is my setup:
Windows 11 Pro x64 Desktop with Workstation 16.2.1
External storage is Truenas Core latest version (12x) and the link is a 10 Gbps link
Windows to Truenas gives me very high transfer in the 1 to 2 Gbps range but within VMWare ESXi 7 running inside Workstation, the speeds are in kilobytes and very slow. A copy and paste in Windows is very fast to the NAS but via the VM inside workstation, the speed is terrible.