I've got a simple image of a map that I have added basic 3D to. I have added two key frames to have it rotate on the x axis to -55 degrees and back to zero. When it gets to -30 degrees (either direction) it jumps in perspective, then continues on. I can't figure out why it's doing this, and I'm wondering if it's just that my system is undergunned. I'm doing this on a powerbook g4 with 1.5 gigs of ram. I can live with the 4 frames a second playback for now, but I'd like to get smooth motion for this.