Fastflite vs Dacron makes a diff.
As does brace height and degree of centershot.
Form and anchor too

I normally get good results without much effort and not have to set things up silly. Just standard tune/ setup and everything is cool.

Do tend to run my recurves on the higher side of brace.
Either near recommended max or maybe even over it.
Just depends on the bow

I let the feel and sound tell me what it likes