Framerate sometimes drops after a period of no controller input

[krisyadao]

I'm noticing a similar behavior, though it seems to be system wide. If I let it sit with no button presses long enough (maybe 10 seconds or so) things will get choppy. Games and the main menu are affected. Things will remain choppy until a second or two after pressing a button, then things smoothen up again.

I'm using the stock SD image with the filled driver option for BoxyPixel.