Super slow on movie cutscenes

[satchigi]

Hi guys, I have problem that slows down on every cutscene movies in game.

When I play game having many cutscenes like metroid other M, and Darkside Chronicles or etc, I got super slowdown in the cutscenes.
game runs very smoothly, but slowdown only happens in cutscenes(not real time rendered).

anybody know the reason?

my spec is

I7 2670qm
geforce 560m
8g ram

thx in advance