Brushes coming out ultra pixelated and buggy

[jadeanime]

This is what they look like when I try to use any brush (big white pixelated blobs) and what it should look like. I have timeline on, if i go to a new frame and come back, it displays the line normally. Sometimes when I draw it also shjows the transparency grid instead of just pure white pixelated blobs. Anyone else have this issue?

I've tried restarting computer and application.

[Ged_Traynor]

@jadeanime sounds like it could be a GPU issue, can you post your Photoshop system info, in Photoshop go to Help > System Info, hit the copy button and paste the entire thing into this thread

Also, a screenshot of the Photoshop interface with all the pertinent panels opened would help