Just installed this and configured according to the guide.
I'm using one GPU (an RTX 3080), I've set it so "Extended Display" in windows and assigned the displays to the workstations.
Workspace 1 has display listed as 1:1
Workspace 2 has 1:2

Everything seems to work fine after a reboot as both displays allow separate logins.
The problem is when the 2nd user logs in BOTH displays go black and display a no signal error.

Ive tried setting displays to extended and messed around with the surround settings in the Nvidia control panel but can not get it to work.

I have read online that is IS possible to run 2 workspaces from 1 GPU.

My GPU has 1 HDMI and 3 Display Port sockets and am therefore running the main Display through HDMI and the second workspace is thru a DP-HDMI cable

My specs are as follows:-

AMD Ryzen 5 3600
RTX 3080
Windows 11

Any help greatly appreciated