It is the same as what is posted here
(78242.1) Once players get to the potential max it slows down drastically, just like all other training. I haven't trained it for an entire season yet, so I haven't had anyone pop more then once in jump shot or inside shot, so I can't comment on that data. Specifically though, with guards, 4 weeks driving and about 4.5-5 for handling up through age 24 looks correct. My 23 yo guard played pg,sg and sf in this last round and still popped driving in 4 and handling in 4. I haven't had any inside shot pops yet, but the guys I play at center, pf, sf consistently are closer to their potential cap and are taking over 7 weeks to pop in driving or handling.....
That training speed thread is almost always up to date. I haven't spent enough time with team rebounding, js or jr to comment on that time. Another player messaged me about team jr and he found it was taking a lot longer then expected, something like 8 weeks or so per pop on younger-ish guards. It was enough for him to stop training team JR.... for whatever that is worth.