1. For the keyboard turn/move commands getting sent at different rates across instances, that has nothing to do with octopus. If you had two keyboards on two different machines and pressed the LEFT ARROW key on both, they would still turn at different rates even though it is all hardware. This will always be the case.
  2. As for the mouse keys not passing, double check that you have your mouse buttons added to the mouse list in the server tab and that the box labeled "clicks" in the status bar at the bottom of the octopus window is checked. Ideally, add a hotkey to the mouse click toggle and you should be able to easily turn it on and off.

Also, I presume you're using Octopus 1.3.8? I've used all versions but it's been a long time since I've used anything earlier than 1.3.5.