As a keyboard player, I can tell you that anything over 10ms latency noticeably degrades the experience. 100ms of keypress-to-sound latency makes the instrument

As a keyboard player, I can tell you that anything over 10ms latency noticeably degrades the experience. 100ms of keypress-to-sound latency makes the instrument unplayable. When I've used Audacity to record multi-track, here's my experience: Over time very good players will notice 5ms or above of de-sync.