I don't think that explains why the object falls slower with a high frame rate though, does it? Or am I missing something?
If ticks are immutable, then after 1 second, 16 ticks should have passed. I timed the falling with a stopwatch, and I can assure you that the slow fall is not just something from time_physics, but is in fact a real phenomenon. The graph I gave above could just have easily used real time on the y-axis. In the worst case, after 2 seconds only 12 ticks had passed.
Thanks for the help with the images now I feel
Just a pity I can't draw