Background changes wait to slide until every monitor has a frame
Changing the background or switching themes slid on only one monitor, and the larger one flashed black at the end. A change merged into quattro waits for every monitor's frame. On a 6K display beside a laptop, both slid with no flash.
Changing the background, or switching themes, slid on only one monitor, and the larger monitor flashed black when the slide ended. A change merged into quattro waits until every monitor has its incoming frame, and waits for every monitor's base image before it tears the transition down.
A monitor that has not decoded within 250ms does not hold the others back. On a 6K display beside a laptop, both monitors slid together with no flash, for background changes and theme switches alike.