Hello,
Enabling monitor fading to fade all monitors but the primary monitor sometimes causes applications (games) to uniformly stutter every few seconds. The stutter occurs consistently every few seconds, locking the application for a consistent amount of time every time. Some applications are unaffected by monitor fading. I have not been able to notice a pattern between the unaffected applications and the affected applications.

Yes, the stutter / lag stops happening once monitor fading is disabled, even if DisplayFusion is still running. No other DisplayFusion settings such as taskbars seem to cause stutter.

Attached

I have checked again with multiple applications. The problem seems to be ubiquitous and should be noticeable with any application rendering at a high enough framerate, such as videogames or video players.

Additionally, I suspect this is an issue caused from my high number of monitors. When setting monitor fading to fade only one monitor, the issue goes away.

Here is a video illustrating the phenomenon. Notice how the cursor trails stop updating for a few milliseconds every few seconds.