Edges deforming when sculpting

When I create a mask and extract, the edges get deformed heavily when sculpted on….any ideas why? It’s happens with any brush, any help is greatly appreciated.

You probably want to enable front facing only in filter sub menu (in the brush menu).
Or reduce sampling radius.


And with that one comment you literally solved all of my frustration with trying to learn this software. Seriously, really appreciate you taking the time to help a newcomer on their journey. Really makes me feel like I can learn this with people so eager to help. IT WORKED! Lol thanks again!