Untraditional openings are generally effective (given you at least know some basic lines for it). Always moving fast isn't always the best. Each move should require its own time. If the game is hanging on your next move, give it some more time. If you're playing against the sicillian and you know your first 14 moves, play relatively fast. Playing aggressively tends to yield good results on very fast games (but I tend to play aggressively anyway, so its subject to bias).
Bullet Tips To Win

I like uncommon openings. I have some favorites that I have studied, espeically the so-called hypermoderns like Reti. I premove as much as possible and work toward developing combinations that enable maximum premoving provided it does not damage my position or make me lose pieces. I use pawns very strategically. A lot of players don't understand how valuable they are in setting up YOUR field of play.
1. Always move fast
2. Dont always think that u are going to win on time.
3. If u think that your oppenent is loosing on time but winning in pieces, just give up all ur pieces and check him as long as u can it takes a while for an oppenent to either capture the piece or move the king.
4. Thats about it Enjoy
Thank You
COMMENT IF YOU HAVE MORE TIPS :D
My rating is 1875 and still changing xD