Will "Magix Movie Edit Pro 14" edit HD video content?

I just bought an HD camcorder and and Magix pro 14, it says “full HD support” on the software box and gives me the option to start an HD project in ALL available high def resolutions. however it runs impossibly slow! freezing everytime i start/stop the video. and im running a 4GB RAM 2.4ghz Quad-core PC. is the PC too slow, or the software too bad? i NEED to be able to edit HD!! thanks everyone!