Hello, as my title states: I have a little problem with the looking-glass-client on my Linux system.
First of all here are my specs:
Arch Linux
Linux 6.0.7
KDE Plasma 5.26.2 X11
AMD Ryzen 7 5800X @ 3.80GHz
32GB DDR4 Ram Speed: 3200 MT/s
Radeon RX 6600 (Linux GPU)
Radeon RX 590 (Windows VM GPU via vfio)
AsRock Taichi X570
lspci output for RX 6600
https://p.sicp.me/p9jYi in short: LnkSta: Speed 16GT/s, Width x16
lspci output for RX 590
https://p.sicp.me/a7LSY in short: LnkSta: Speed 8GT/s, Width x8 (downgraded)
(I am fairly new to vfio stuff, I got myself the X570 board because of pci-e version 4 and therefore better performance in dual gpu setups instead of pci-e 3.0)
Windows 10 VM XML
https://p.sicp.me/cnQ7w
My looking-glass-client terminal log (started with -F for fullscreen, no config)
https://p.sicp.me/egtea
Now to my problem.
The image appears to be choppy and not really 60fps sometimes and the transition feels not as smooth as when I use the Windows 10 VM directly via HDMI on my monitor.
This issue is hard to explain, so I made two very bad videos trying to show what I mean (Sorry for the phone video, but my phone has the ability to record in slow motion and this shows it a little better in my opinion)
I hope someone can understand what I am trying to say here or what my problem is, I really like looking glass and would like to sort this out somehow to get the best possible experience, maybe it already is the best possible experience, I don’t know, please take a look at the videos.
Sorry for my bad recording skills, I am not a director, I am just a Linux user 
Note: Both Linux and Windows run at 60Hz refresh rate, there is no vrr, also the game runs at 60fps and vsync on
With looking-glass-client
Direct hdmi output
I tried to disable kwin on Linux but it didn’t change the problem.
Thanks for your time and efforts