Strange freezing

My dk character upon entering combat the audio for spells and voice start to become distorted. Also when I'm in combat with multiple enemies the distortion becomes worst, fps drops to about 5 and character freezes to where I can barely do anything. I am not having any issues with any other characters and it does not seem to be caused by addons. I re-downloaded the client and the problem still persists, atm I'm downloading a non warmane client to see if thats the issue. I don't think it can be a pc problems since all my other characters no issues at all. Anyone experience this before and if so what was the cause and the solution?

"it does not seem to be caused by addons"
how did you test it? did you try to disable ALL your addons before to log-in with your DK?

Pretty much I used a seperate client without any addons same issue

Found what was causing the issue it appears its caused by the wow.exe that came with the mop client. After downloading a few other installs and the problems didn't occur with them I tried the exe that came with warmane's client and it happened on those installs. So for anyone that get issues similar to this one change the exe