I played with it on for about my first 6 days play time.
But then i turned it off because of a custom track with 2many explosions.
I actually just now remembered i turned it off.
So i guess for now, i play with it off just because i dont feel like going to the options to turn it back on.
Not sure what ill do for fusion, i dont think it really affects my gameplay in a negative way being on, so not sure.