Proxmox Windows 10 VM with Passthrough SUPER slow over RDP / Moonlight (odd..)

[AusKee]

Good Afternoon Proxmox Community,

I am running Proxmox v8 with a Windows 10 VM with GPU passthrough. The Virtual machine is fast (video wise) if I am plugged the display in the GPU. However, over RDP / TeamViewer or Moonlight. Its so slow you would think I am on dial up. Speed testing on the desktop itself shows it's connection to the internet is 380mb down and 97mb upload.

What could be causing the slowness over these applications? Moonlight seems to be the worst of them all pretty much 1 fps on the desktop.

 

[Philipp Hufnagl]

What Resolution are you feeding back. When you don't put out data from the gpu directly, it has to be sent back over PCIE. This can cause a bottleneck in the bus