[Jeff_Brown]

You might be special. (I'm not being snarky.) I'm a digital musician. 5 ms lag is just barely perceptible to most of us.

My intuition regarding proprioception is similar to yours, though -- give me laggy input of my own hands and I'm still pretty likely to get things right.

[planede]

Sound travels around 1.7 meters in 5ms. Acoustic musicians can play fine while being apart more of that distance, although there is a tendency to slow down, unless consciously keeping the tempo up (everyone individually feel that they are rushing a little bit, but that's how they just keep the pace).

There is a huge difference between consistent latency and jitter, but even then I doubt that 1ms latency + 1ms jitter would be very noticeable.

[Aeolun]

Well, yeah, it was a figure of speech, the refresh rate is 8ms or so, so you wouldn’t notice it before that in any case :)