I've been looking for the same, it's come down throwing some $$'s at dedicated 4k@60 HDMI/DisplayPort extenders and using a soft KVM like Barrier [0] for mouse

I've been looking for the same, it's come down throwing some $$'s at dedicated 4k@60 HDMI/DisplayPort extenders and using a soft KVM like Barrier [0] for mouse and keyboard. I haven't found any hardware specs that include latency figures, an occasional "no latency" claim. [0]: https://github.com/debauchee/barrier https://github.com/debauchee/barrier