Scrypt minig setup help

[madmack1]

I am mining ltc and am running my amd 7770 ghz edition hitting only 182khs. the standard model should be hitting 200khs
runnig amd sdk and catalyst 13.12 if i even touch intensity 17 it will show 5khs for 20 seconds then crash

{
"pools" : [
   {
      "url" : "stratum+tcp://eu.ltcrabbit.com:3333",
      "user" : "madmack1.madmack2",
      "pass" : "fuckyou1"
   }
]
,
"intensity" : "16",
"vectors" : "1",
"worksize" : "256",
"kernel" : "scrypt",
"lookup-gap" : "0",
"thread-concurrency" : "8000",
"shaders" : "0",
"gpu-engine" : "0-0",
"gpu-fan" : "0-90",
"gpu-vddc" : "0.000",
"temp-cutoff" : "95",
"temp-overheat" : "85",
"temp-target" : "75",
"api-mcast-port" : "4028",
"api-port" : "4028",
"auto-fan" : true,
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "30",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

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[Varens]

Try "intensity" : "18",

[DFiLeR]

with some of my cards if i change worksize to 128 or 64 it works at diff intensities than say 256. and yer even if 17 doesn't 18 might so try that. or if your looking at the wiki they might of overclocked the cards. if you haven't?