Low Hashrate when pool-mining

maa_noimaa_noi Member Posts: 2
Hi folks I use following setup:

i7 2600k
16 GB Ram
Windows 10
1x R9 280x (1100Mhz / 1500Mhz) -> upgrade 3x R9 280 comming soon

Everywhere there are rates of 25Mhs reported for this card. I reach them easy when solo mining (worth it?) But when I am pool mining with ethermine or claymore only get rates of 10-15Mhs as seen on screenshot :(

so whats wrong??

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