Problem with eraser tool in photoshop, please help

Hi everyone. So out of nowhere I'm having problems with my eraser tool in photoshop. Whenever I try to use the eraser it doesn't erase in a smooth streamless fashion like you'd expect, and how it normally works. Instead it erases but it erases in consistent bursts of circle shapes. I've never seen this before and I even tried resetting the eraser settings, but it didn't work. I'll attach a picture so you can see what I'm talking about. Has anyone else experienced this problem and is there a fix for it? Thanks!