Hey, I have a really big problem

I have a big image i split up in tiles ( <200 ) and that I want to scroll over in 3D with a camera.
Now what is really weird is that if I move the camera like 5 units per frame the movement looks extremely jerky even though the app runs at >100 FPS. It really looks like its running at 5 FPS, its not smooth at all.

I just made a demo file with one quad with the camera moving over it and on my computer I get "refreshing texture scanlines" ( i suppose thats what it is ) and jerky movement all over. Actually even the box primitive alone seems to move jerky. It gets a bit better in P3D, less refreshing but still jerky movement.

The test file is here:
http://www.dataclouds.com/download/test.zip

I mean its obvious that the movement will appear a bit jerky when it moves only a few pixels per frame, but is there at least a way to get rid of the "reload
texture effect"? Or is it  impossible to move a camera fluid over an image?

My computer is a new macbook with the shared memory intel card.

Thanks for any help!

One thing I've noticed is in P3D clipping of UV coordinates in polygons seems to be way out of whack. This causes movement over a 3D plane to look really weird in P3D, I think this was a known bug and I dunno if it has been fixed yet, but I just use OPENGL mode to fix it.

Another issue may just be that you're incrementing your camera movement wrong somewhere, perhaps losing information from an int to float conversion which tends to be a common mistake.

I'd look at your code but your files not there!

Good luck!