Hey drlava...
You remember seeing the glitches when I tried to render this to wave in LaserBoy?
Well, I looked into the matter.
If you look at frames 1796 and 1797, you will see that one frame's last vertex is almost all the way on the left side of the screen and the first vertex of the next frame in near the center. That's a jump of more than 32,000 point locations in a single step.
This is just one example I found. There are several others.
I did find a little bug in LaserBoy and fixed it. So now when I tell LaserBoy to optimize, it takes care of those things.
But there are huge jumps in your ILDA file.
James.