@ peppy. it happens on all maps. it doesnt matter if it has a video or not.
@ strager : correct. yes i did try with every single mod that i can think of and it still happens the same. and no i am not using 60 fps limit since that would cause even more lag especially mouse lag in which will affect me greatly.
fps without frame limiter :-
normal maps without videos around 170~190 fps. maps with videos : oddly enough 200+ fps. which is really odd