[Kameron8]

When you start going past softcap, stat points have a 90% return. For every three points past the softcap, the return lowers by 9%. So:

Softcap + 1~3 = 90% return
Softcap + 4~6 = 81% return
Softcap + 7~9 = 72% return

....to a minimum of 10% return.

This doesn't appear to be matching up to results I'm getting. Given how difficult testing this on the client is, there's a possibility the program created to calculate these is what's incorrect. Either way, after you start going further along the soft cap, the expected scaled stat you get from following your equation deviates further and further away from what the calculator shows.