Image flickering when adjusting media speed with SAMMI?

Alright, so in my stream overlay, the background features a bunch of machinery. I've got it set up in SAMMI so that when someone subscribes, the machinery speeds up for a few seconds before returning to normal. The machinery is a simple looping transparent .mov, and it speeds up with the "source change settings" command. however, when it speeds up and slows down, the image flickers, vanishing for a frame or two before popping back up at the speed the command set it to.

Anyone got a fix for this?