Lemly, don't worry too much about stats man, as long as you are winning, fwiw here's mine since i switched to 6max, only got a small sample in at 5nl cuz only recently moved up.
Even though the VPIP/PFR stats aren't whats considered optimal notice how my stats are different for each limit, not hugely but there is a difference, you'll find whats the optimal strat to use at whatever limit your at and just stick with it, par example, 2nl imo the best way to play is loosish/passive, seeing cheap flops and stacking people when they overplay their tptk, raising on the btn and cbetting every flop, whereas 5nl, and i know its only a small sample, but you can see that i've had to work on closing the gap between my vpip/pfr stats and picking my spots better with the cbets.
Why did you change back over to FR anyways man, 6max is for hero's!!! Now that i moved over theres no way i'm going back to FR ever lol