Hi! Thank you for your reply. I am out of office for a few days so currently unfortunately cannot modify the scene, but between frames 570 and 740 the jitter shows on rendered video, on the edges and the balls (I attached a screenshot indicating). My example video is a bit too big for the file size accepted here, sorry for the complication. I take care of it as soon as I get back. In the meantime, I appreciate every help and ideas.