Any chance you would be willing to take a look at my match from tonight and compare how it changed my ratings as opposed to previous matches, and if it was the right choice for me?
you win the game clearly, so it should be the right choiche ;) 34 TO by the opponent was a genious amount, so the tactic definately worked out.
Then for normal you got around 20 TO, so maybe your team was perfect for a to, high OD cwenters and PF or your opponent has a team which has problems to handle the ball.
About the change of rating, search for the Manager JosefKA he made an "WhatIF" tool, which predicts your ratings with different tactics.
when is it good to use a slower pace?
I had to say that i am still a fan of fast tactics, because the amount of to didn't increase that much this season(ok normaly i got an pretty good offense flow), and i would say that i got a bit better shots. But normal pace get definately more atractive then last season, so i would play push the ball, Motion, Run and Gun and maybe base offense.
What is good about using a defense that is a slow pace? Does that force the opponent's pace to slow down as well?
I would say yes, but i don't see the different - so i choose the defense the way i need most.
Will FCP become more effective if the players have higher stamina?
I would say yes, it is hard to see the effect of stamina into the game ... But with FCP i usually got some trouble at the end, and i got an team with "low" stamina.