Screen Freeze, Help plz

Hey! Whenever I press calendar in game my screen freeze, and after couple mins I get wow error, so annoying. Only happening on my shaman, I also have one more warrior on same accounts and everything works good, also my other accounts works fine. Suddenly started happening 4-5days ago.
I tried to delete cache first and nothing. Then disabled all addons, same again, Deleted wtf folder and still getting screen freeze, At the end I deleted whole game, and downloaded it again from warmane site and fking same **** all over again
Please someone help!!!