I didn't notice this problem before, but maybe i didn't have a similar task so it slipped to me:

I need to animate the walk through the tunnel, which consists of several repeated layers scaling up to simulate a walk trough, and when first scaling up and out of the screen I fade in a new, small one instance in distance, etc. It should loop for a while. So problem is that as they get larger scaling apparently get so slow that they catch on to each other size - while in reality, it should speed up as it gets close and the distance between layers should grow with them. I tried to compensate for that effect by adjusting curves in the graph panel but i could not make it feel natural. Slow down effect is still there.

Have anyone faced that problem and what could be worked around? Or i just should keep playing with curves?
Thanks!