I bought a TESmart HDMI kvm off Amazon recently and have been quite happy with it. It has EDID emulation so the OS doesn’t see the monitor disconnect when switching.
Don’t know if their DP kvms support free sync though.
Ah, yeah, I thought maybe you meant a feature where windows would pretend the monitor was still there, since I’ve been using that feature and it’s not terribly reliable in my experience and keeps moving all my windows to my TV when the KVM switches and often doesn’t move them back, so I have to disconnect the TV in settings and reconnect.
huh, weird. its usually been really reliable with my setup. I have 3 monitors connected to an egpu on a laptop + my desktop and… I am often shocked how reliable it is at putting things back.
this is the windows 10 soluton, you can explicitly save and restore window positions: