That’s why the running still has issues…
More granularity yes.
Performance doesn’t change.
Again, the animation being used is whatever it is at the time of it being used. Size on disk doesn’t really matter and size in memory does matter a bit, but its not like the whole ABP is always in the ram - as far as the print outs read anyway.
Also, if that were the case the ABP would need to be completely read into memory when swapping, so what we commonly do wouldn’t perform as well as it does on smaller footprint machines like mobiles…