HI! I had the same problem ... When i plug in my card i only get around 19 mh/s so i was searhing on google how to increase hash rate with no luck ... and then i watched video on youtube how to flash bios etc. and i saw that u have bios switch ... and i said to myself let me try that and i did and i switched to "silent mode" or something like that and i now i get 22.1 mh/s i ll try to flash my card soon and i hope i ll boost hashrate lil more i hope that helped! Good luck ... and btw can u point me to some tutorial how did u flash ur bios? tnx!