Quote Originally Posted by Hornypony View Post
but as I just checked, double stamina is not double stat from training.
Yes, rough estimate based on my girls seems to show that the formula is something like 1200+26*Stamina for 4 hour best session (or 7200+156*Stamina for 1 day best session). This shows close values (+-0.3%) on my 8 girls that have Stamina < 200 (including event girl) but for last girl, that has 222 Stamina the result is totally different (average gain is around 50 per stamina point instead of 156 when I look at difference between 194 and 222 stamina girls). So there may be reduced gains in training effectiveness after a certain amount of stamina that may or may not depend on girl too. Actual gains after level 200 may be as low as 20 per Stamina point because I am comparing with 194 instead of 200 now (and 200 is just a theoretical breakpoint, actual one can be anywhere between 194 and 222), so there are few levels with 156 that lead the average value further away from the actual one.

My best girls are:
Ice - 222 Stamina - 38892 per 1 day session
Pantress - 194 Stamina - 37380 per 1 day session
Frecly - 179 Stamina - 35040 per 1 day session.

Upgrading Stamina for Ice slowed down to 1 point per 2 movies. Pantress and Frecly still gain 2-3 points per each movie, so they are slowly catching up. I am also training Pantress as my second best girl but she is still at least few months behind the Ice because she needs to catch up on stamina first before she starts lowering the distance between them (Ice: 563k/349k/218k, Pantress: 255k/156k/72k). I have not completed any girl past Pantress yet, so when I finally do they will have a much harder time to get to the same level as Ice and Pantress.