I ran across this a bit by accident. I had an unrelated issue being caused by my desktop theme changing background picture and accent color every few minutes based on the default setting for that theme. I recently started having an issue in game where I would get this very regular massive lag and frame drop. I turned off the ability of the theme to change the (background) picture and accent color more than once a day and the issue seems resolved.
I obviously don't have a sample of use cases that prove this is or is not anything, but probably worth trying.
I obviously don't have a sample of use cases that prove this is or is not anything, but probably worth trying.
