Hi! Thank you for posting, and welcome to the forum!
When I try to go to your link it’s giving me a “This video isn’t available anymore” error.
https://www.youtube.com/watch?v=YweXQ–l7ew
^ this is the link, right? Also, you should be able to post links now.
All of your setup should be fine, especially being that it is 1440p.
The KVM can do up to 240Hz HDR with DSC (display stream compression) and 120Hz HDR without DSC.
Can you tell me what cables you’re using?
Also btw we do have a guide if you would like to browse it: