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« on: October 14, 2019, 05:15:06 am »
I had this problem, the problem I think is caused by the order things are rendered to the screen , eg if you move the camera or move an actor using physics rather than placing or moving using XY position, the position is calculated every step size, then it is rendered to a rounded position each frame. The solution for me was make sure all the drawing, camera moves and placement blocks were in the same behaviour, so that I could ensure each operation was performed in the correct order, at the same time.
My particular case was that I was using physics to move a character with inertia so that I could 'throw' the characters around the screen, but using tweens to move the camera from one room to another when dragging, to the edge of the screen. I had a jitter that fits your description exactly.