Right now, my configuration is 2 hdmi cables for video output (one in my pc and the other in my work pc), a usb connection from each of these computer to the monitor (usb c for the work pc and usb b for the pc) and my mouse an keyboard are plugged each into their own usb port on the integrated kvm.
My monitor is updated to the latest firmware, and bios is updated to the last firmware it can be (it’s an old motherboard, so not really supported anymore).
I doubt that the bios is the issue here because I had the same bios back on windows 10, and I didn’t have the issue back then.
But that a good avenue to explore still. Thanks for your input.