I was drawing in Photoshop, when I accidentally clicked on Select and Mask. This caused Photoshop to crash on me. So I reopened the program and my drawing was missing. Did some digging in my files and managed to find it (thank god I saved it before the crash). But as soon as I zoom into my drawing, and move the canvas around, it sort of freeze frame lags. And when I try to draw, the lines are WAY too fluent and sensitive unlike before. I can't draw like this, does anyone know how to fix it?