1. Please describe as detailed as possible what you did and which problem that leads to.
I'm having problems with the lights of a vehicle of mine. The problem is that the position of the inner lights move around randomly, when moving. If the train is not moving, the lights are still. If I try to capture it on my computer (eg with fraps), I get a constant but lower fps (fix 30fps instead of 50-55fps) and the error doesn't occur then.
Since I can't capture it on my PC, I had to video it with my mobile, that's the reason for the quality (but the problem can still be seen):
I binded the ligths to the 'Main' animation, it didn't help. I tried to set the ligths 'fixed' with zero movement towards the camera, still doesn't work properly.