Photoshop CS6: Screen breaks apart when I use the brush tool

[sewonb89807830]

Hi these are some the examples of screen crashing, when I use the brush tool.
I don't know if it is a lag or something, but it is really annoying and unable to work properly.

I have tried reinstalling the Photoshop several times and still no help.
I have both photoshop cs4 and cs6. But only the cs6 has the problem.
(I am trying to fix cs 6 version because some of the tools don't exist in cs4, thats why I need help)

Anyone knows why this is happening?

[JJMack]

Have you tried resetting all CS6 tools and if that does not fix the problem your CS6 Preferences. Are you using Pen or mouse. PC or Mac.

[sewonb89807830]

Hello I am using Mac, and it doesn't matter either I use Pen or Mouse it still creates those breaks.

I use Wacom Tablet though.