KDE desktop freezing every minute for a second or two each time

Description

Note: it wasn't just the desktop itself freezing, but the entire screen, including any applications or games that were being played. Very annoying.

Solution

The cause was having the wallpaper set to Hunyango. Apparently that wallpaper required constant buffering or inefficient allocation every minute or so, since it was in a permanent loop. Reported the bug to KDE devs, so maybe this will get fixed, eventually.