There's encode and decode latency as well, but I've been able to get the total latency to a data center about 200km from me to around 30ms or so with some solutions. Was good enough for some non-competitive gaming for me.

its not really about network latency at that level. you need to acquire screen contents and render them too. if you try to send signals uncompressed bandwidth (pps) could be a problem too in that time frame. if you compress it you introduce additional latency on capture and rendering times... i have yet to see this working over an ethernet network...