Using suse 11.0 I could play 720p and 1080p video flawlessly with smplayer. I then formated and installed 11.1 and it played flawlessly once again.

I decided to dualboot to winxp(let's face it, if you play games other than rogue-likes and things that don't work with wine/cedega you need windows) and then I redid my linux partitions deleting everything because I wanted to try a different scheme with my hard drive space.

Everything works fine but now the smplayer playback is really laggy. I have set everything up correctly as far as I know. Turning on 4 threads, dis/allowing frame skipping, trying various video/audio output modes but things play like I'm on a pentium 1. Any suggestions on things I should try? Not only that but smplayer doesn't want to play streaming media now. VLC plays streaming fine mms and h264, but VLC never played as smoothly as smplayer once did.

Why is linux so hit or miss I've had a multitude of problems on a fresh install no less?!