Help me game freezes ms high

Hi,

I get huge MSs while playing and the game just freezes i can move everything around me stutters it says i have 4500MS but my internet is great (i tested it) other games work its just with Wotlk. this was a problem for me since the start. i read other people have the same issue but there is no working fix.
Its not internet
Its not addons
Its not my laptop components i can run WoW fine
Please help me repair it its the only way me and my brother still keep in touch and bond
Thank you for you help would like to hear from you ASAP