What IO latency does KVM switch add?

Question

Monitors

For example

IOGEAR 2-Port 4K Dual View DisplayPort KVMP with USB 3.0 Hub and Audio w/Full Set of Cables (GCS1942 TAA Compliant)

what are the delays for mouse, keyboard, monica and audio?

Because in online games, 0.2 ms can decide the outcome of the battle.

Answer 1

0.2 ms - both the monitor, and the keyboard, and the mouse have much more delays. In keyboards and mice - from 1 to 8 ms.
One friend calculated that from the mouse to the screen the delay is 15 ... 33 ms, the average is 24: https://www.youtube.com/watch?v=nbu3ySrRNVc
A simple KVM with a range of a couple of meters in most cases does not create any delay. I don’t know what’s going on with video protocols, but the interactive operation of USB with its timeslots suggests: if we create a delay, it won’t work.
Sometimes there are glitches with a specific piece of hardware on KVM, but this is already difficult to predict.