Lag?

[$youbot$]

I have been to google and back forums and more. i just can't seem to find a fix.
All has been good all day running just fine and i even went afk a few time's,
But to night has just been a downfall . i have done a full reinstall. even went to a dif" computer.

I start WoW. then HB. i load my profile. CC and click start. it run's for a bit and on the 3rd or so mob. it goes from 60 Fps to 3 or so.

like i said i have done all that i know. reinstall new computer. new file setup even did try to go back to def class.

any idea's Thank's!/
EDIT.
i have high speed net. or at least here it's high speed/ 18mbdl.
computer spec's are 4gb DDr3 amd q-core. rage hd.
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Just found the FiX) "For me"
Like i said in the first post "pre edit" it was working fine all day. "till level 20"
So i turned mount off and now work's great?

 

[Tony]

disable all your addons
clear your wow cache folder
and next time post your Hb log as attachment

 

[$youbot$]

I did that/Don't use addon's "i don't play atm nor have a problem with the GUI"

i also did drop my fram rate from max to 50. in one other post i seen, and it seem's to work now.
Thank's