Mediaplayer Classic is acting like crap

[DMKA]

Ok, so I was recommended MPClassic, and I think the QT Alternative and Real Alternative is great, but for some reason, it won't play anything right..qucktime seems to be ok bu my mpegs and avi's play like shiz...it keeps dropping a ton of frames and such...

Here is the example. Vid 1 is how it should play(and how it plays in WMP9), and vid 2is how its actually playing(in Media Player Classic). Anyone know whats causing this and how to solve it? Cause I really would like to use one player for all my vids.