Rx 570 4 gb hashrate is very bad

My rx 570 4gb has a hashrate of 5.0 mh/s while mining ravencoin, and I've heard of people getting much higher hashrates. I turned on compute mode and started mining about an hour ago. I am using flypool, and NBMiner. Do you guys think I have to wait a few hours and the hashrate might increase, or should I do something?