Unraid GUI slow/unresponsive

Hey all,

Use case:

I use unraid in GUI mode, plugging my monitor directly into the Unraid machine and logging in there. I'd like to use this machine as a VM host with GPU Passthrough for everyday use, with the option to allow Dockers/Apps to run in BG, accessible through VM.

I'm currently testing my config on an Unraid trial using the following hardware:

Unraid Version: Latest Stable
Motherboard: ASROCK B550 STEEL LEGEND ATX

CPU: Ryzen 5950X

GPU: SAPPHIRE NITRO RX6700XT

RAM: Non-ECC, 16GB (if you need specific speed/brand please let me know)

USB Stick: Cruzer 2.0, plugged into an onboard USB 2.0 port

Networking Port: Onboard Realtek

Unraid is REALLY slow sometimes. Random menus will hang on the loading animation, DHCP randomly drops or takes a long time to pickup its determined IP. It used to be just the networking menu would hang when switching from Automatic to Manual - but now it seems to be across most of the menus.

I've read some posts about disabling C-States, enabling IOMMU grouping, and other preferred BIOS settings. 

Question time:
 

1. What could be causing this slow down? This is all brand new hardware I recently purchased.
    
2. Slightly unrelated - I know AMD video cards have issues with Unraid, and there are workarounds by installing the V-BIOS within the VM settings. Do I still need 2 video cards to switch from a live VM session back to Unraid in "Unraid GUI Mode"? OR if I shutdown the VM, will Unraid automatically recognize the GPU has been released and pick it back up? What is best practice for this scenario?

I'm realizing the importance of getting a big fancy motherboard now with the most ports possible for expansion cards and GPUs - will be upgrading to a better motherboard soon, but would like to determine whats causing this, so my next purchase doesn't yield the same results. I've seen plenty of successful B550 builds, so Im hoping that's not the issue.

Cheers,
Unraid_Student