WotLK game sometimes becomes unresponsive when entering portals

[dngrs]

It's an old issue for me and I can't stand it anymore so I need some help

Sometimes when I enter any portal my game is immediately full load for the zone and it just remains like that. I alt tab and see in processes that the game is not responding and I have to restart it to try again.

it cant be my pc to blame cuz its an i5 4460, 8gb, nv 960