Just use the default frame limiter .
Disagree. For example there's a stunt I'm trying these days which is possible and is more likely to happen only with a fps ammount of 35-40 max.
I also use a custom frame limiter some times to get under the 25 fps barrier for even more rotation
It looks pretty lame in-game but once you view the rep, it's fucking majestic.
Exploit your game, people. And don't go over 60 if you don't want your stunts to look silly, and stagnant-ish in the air.