AVG has been stealing 55 GBs of memory into a folder called DEFS, how do I get it back?

Something has been constantly swallowing up any available space on drive C (running windows 10).

I had zero left and was stalled, so I freed up 5 GB, which got mysteriously filled in hours. So I freed up 10 GB in C by moving files to drive D. But C filled up again within a day. And so on. I realized that I’d soon have no space left in either C or D, so I ran WinDirStat. Turns out, AVG is taking up a whopping 55 GB of drive C, specifically in a folder called DEFS (the tree is AVG → Browser → Application → DEFS).

This is a crisis - I can’t work because I’ve already run out of space 3 times just today. This DEFS beast is insatiable but I want to proceed with caution here. Does anyone have insight into why this would happen? Will it let me just delete the folder without the issue repeating? Can I even delete it? Do I have to uninstall AVG entirely, and will that fix it?

Any guidance on how to solve this would be enormously appreciated. Thank you!

I want to proceed with caution here. Does anyone have insight into why this would happen? Will it let me just delete the folder without doing it again? Can I even delete it? Do I have to uninstall AVG entirely, and will that fix it?

Any guidance on how to solve this would be enormously appreciated. Thank you!