With the recent update, eventually when a room gets too full (say 30+ people) other players movements start falling behind what they are actually doing in real time as they continually stutter. The delay behind their real time movements gradually builds up. This is very noticeable when other people appear to be frozen for a second or two, make only small incremental movements after every pause, and start talking to people in the room who aren't even remotely close to them. I can only guess that this is because the server can't keep up with all the ik calculations.