I use qdipp for font smoothing in Windows (works great). For some reason it created a MASSIVE crash dump folder (>25GB). Deleted that and problem solved. Been using that for years and that never happened before.
Thanks Ruffles. I used WinDirStat years ago on another computer but lost it along the way. Just the other day I was thinking "didn't I used to have an app that showed file size?" Going to download it now, a must for small SSD.