Any downsides to using KVM DisplayPort Switch?

[WilkinzMicawber]

Just got a IPS monitor, and it only has one displayport port. I would like to switch between two computers seamlessly. Before, I had two sets of keyboard/mice with both pcs plugged into the same monitor. Now I might be forced to get a kvm switch, and having one set of kb/mice would be pretty epic. Do KVM switches introduce any latency? Does it degrade picture quality? I have a hard time believing there are no downsides at all.

 

[xapoc]

Comparisons:
Hub Base Class - longest latency, Emulated Class short latency, Semi-DDM Class - short latency, DDM Class - no latency


https://en.wikipedia.org/wiki/KVM_switch

 

[WilkinzMicawber]

There doesn't appear to be any switches that allow for 144hz refresh rates. May just have to manually switch everything. Hope the connector doesn't get worn out.

Having a display port cable with two ends on one side and one on the other would be nice.