Quote from: uapan on February 11, 2014, 09:29:54 AM

When mining Vertcoins I have found it is very important to use the right Catalyst drivers, so please post OS and driver version with your settings.

I have been struggling with my hashrates, but just as an example I have 5x R9 290 (in two different systems) under Windows 7 ultimate 64 bit.

With stock speeds, intensity 17, tc 24550, w 256
Catalyst 14.1 gives around 250 khash/s
Catalyst 13.12 gives ~300 khash/s
Catalyst 13.11 beta 9.5 gives ~400 khash/s

So, if you feel you are stuck and have tried everything - don't forget to try different drivers as well.

Thanks for you suggestion, however I find quite hard to find the 13.11 beta 9.5 drivers for linux in the net, they disappeared after realising the new beta.

EDIT: I tried 13.11 beta 9.55 nothing changed, apart from not starting with -g 2 at all.