So this seems to only be a problem on this particular zpr, but there's this faint grid running across the zbrush screen and I noticed it showed up after I played around with some matcaps. I know the lines arent from the mesh because I turned on polyframe and tried remeshing to see if it'd do anything and it didnt. It's…
Oh not too sure, sorry i just saw this. i ended up just copying the tool --> preferences --> init zbrush --> pasting the tool and it seemed to fix my problem. thanks anyway