Im getting around 300 khash/s on my r9 290... seems rather low to me.  

Specs;
16GB mem
intel 4670K OC'd @ 4G
win 8.1 64bit
Catalyst 14.1 (beta)
R9 290 -> core 1000mhz / mem 1400mhz with MSI afterburner

Start.bat:
GPU_MAX_ALLOC_PERCENT=100
sgminer -o stratum+tcp://pool.darkcoin.io:3333 -u Crybaby84.D1 -p x -k darkcoin -I 18 -g 4 -w 128
pause


Any tips to bring it up to speed   ? Is it the catalyst beta treading me bad?  Thanks!

EDIT Shuting down afterburner and reboot gave me 2.4 Mhash/s. Problem solved !!

With my R9 290 i cannot seem to get any higher rate than around 7000 to 8000 Khash. Seems kind of low to me  .
Somebody got a clue on how to get a better rate? I tried to play around with the -s parameter, but doesnt realy affect the hashrate.

To be complete:

Intel i5 4670K, 16GB memory, Win 8.1 X64

Startup command
:BEGIN
start /low /wait xptminer.exe -o ypool.net -u Crybaby84.M1 -p X -d 0.5 -s 2
timeout /t 30
GOTO BEGIN
pause

Version
xptMiner (v1.1) + GPU Metiscoin Miner (v0.4gg)
Catalyst 14.1 (13.35.1005-140131a-167669E-ATI)

Screenshot with info:
http://postimg.org/image/8lud2ngpx/

Any help will be appreciated !! Thanks.