actually i thought it's graphics aswell after i posted about cpu, but it just seemed a bit strechted, since it's not that big of a sprite. And i went checking out, and did some extensive testing and its the cpu. I even tried in a new cap with large objects and they are lot more cpu consuming than the smaller ones.
And its all mostly just because of the collision type, changing from per pixel to bounding box, made a huge difference, now it's only a small drop in fps, completely unoticable even with 20 big ships moving at the same time.
thought now i have a problem because the ships are not a big box, and i need per pixel collisions for bullets, so i will probably have to have another object attached to it for movement.