We had a server VM with everything running really slow even though other server VMs configured just the same didn't have the slowness problem. Other server VMs on the same host didn't have the problem. If the NIC was disabled, the VM ran fine. After lots of troubleshooting and frustration, a tech used VMM to add a legacy NIC to the VM. The VM seems to run fine now.
However, the legacy NIC is disabled in the device manager of the VM. Do you know why a second NIC, which is disabled, would fix this issue?
Host: Windows Server Hyper-V 2012 R2
VMM Agent: 3.2.8071.0
VM: Windows Server 2012 R2 Standard, Generation 1
VM Guest Services: 6.3.9600.16384
NIC 1: connected to logical switch with teaming
NIC 2: Legacy NIC connected to logical switch with teaming
Thank you.