In my game, having 5 sprites makes the game slower, in a strange way where every second frame is 1.9 CPU and every first frame is 1.0 CPU. This makes the game laggy - and things that should toggle on and off each frame appear to flash randomly due to every second frame being longer.

Adding 5 more sprites keeps the game at a steady 1.0 CPU! It runs perfectly smooth!

Is this a known issue?

This definitely sounds like a bug, and I can't imagine what would cause it. Could you send me a copy of the cartridge to look at? ([email protected])

Ok I've just sent that with instructions on how to reproduce the error.