wasd or arrow keys to move and space to talk. What the test is: instead of just sending your location every 0.1 second It only sends cloud data when you change what direction your going in and it also sends the direction your going in, so for other people you keep going in that direction until you send new data. In theory this should make it support many more people and make it look smoother without overusing the cloud.
Credit to @TimMcCool for the cloud engine which I think I made better i haven't perfected it yet so it might glitch