I've been doing it for a few months now. I eat between 1pm and 8pm approximately, depending on how strict I am with my diet. On the weekends, I may stray away from it a bit and overindulge. I really like it for the convenience and the health benefits.
I didn't notice any drop in performance or having any issues maintaining my muscle mass compared to the "eating every 3 hours scam". I will never go back to that torture.