Due to the jitter reported in
this thread, I added some code in the engine to support smoother (but less accurate) actor motion, and now I've made an extension for it.
Enable Smooth Motion for %0Turn smooth motion on.
Set Move Multiplier of %0 to %1Using smooth motion, drawX/Y and realX/Y are separated. This block sets how much closer to move drawX/Y to realX/Y. The default is 0.33. Decrease the number for smoother movement (but even less accuracy).
Set Min Move of %0 to %1The actor will always move at least this amount. The default is 3 (pixels). Decrease for smoother movement, but the actor will take longer to slow down.
Set Max Move of %0 to %1The actor will snap to realX/Y when it is farther than this number. The default is 99999, effectively disabled.
Enable Position Snapping for %0Enable this option so when using the setX/Y block, the actor will snap to that position. Do not enable this option for actors that move by tweening.