Hi, my R9 290 give only 2,5 MHs
2% have 3,6 MHs

here is sph-sgminer_x11mod config:
"intensity" : "15",
"vectors" : "1",
"worksize" : "128",
"kernel" : "x11mod",
"thread-concurrency" : "24550",
"lookup-gap" : "2",
"gpu-engine" : "1025",
"gpu-memclock" : "1450",
"gpu-powertune" : "20",
"gpu-threads" : "2",
"kernel-path" : "/usr/local/bin"

What is wrong?