Couldn’t find any relevant to my issue, thread here.
I’m experiencing the following… Every brush stroke I make, regardless of the tool being used - healing/ regular brush etcc. Every newly created pixel/information appears with a bunch of deformed pixells, wrapped around. When zoom “in” or “out” with the smallest magnification, the picture clears and its all fine again. So I presume that this has something to do with some display setting within PS or the vga drivers. My sys spec are: win xp sp3; lcd monitor; ati vga with catalyst - the latest;
Also, this is only an issue with PS! Corel Painter, GIMP, art rage etц work absolutely perfectly! Unfortunately I cannot forsake PS due to its photo retouching advantages I need for my work 
Thank you!