This LVC point is about a hot of a topic as abortion. People will swear to hell and back to never go lower then 3.3v cutoff point. Other peeps feel fine at 3.0v. Other state it all depends on the battery quality that warrants wether going higher on the LVC is good or a waste.
I just ran on my Flux at a timed 28 minutes at 3.2v today. I was surprised how much less run time I got vs my 3.0v cutoff. I think I may go back. Im gonna check my charge mAh to see exactly how much it actually discharged the batteries at that level. I run SMC's, so I think i'm gonna push them a bit harder then what many folks would deem safe, but in the end, its my truck, I do with it as I please.
As far as punch, i'm still playing with that even after a month of having the Flux. I finally got the brakes where I want them, proportional with reverse cutoff at 20% brake with 10% drag brake. Punch control at 30% seem to be a nice level for my bashing needs