So, new nFactor causes significant dropping of GPU performance. I've got around 38KH/sec from single R9 280x with I=11 (it was 140KH/sec in previous nFactor).
It seems that I need to increase RAM (8GB in the present situation) for setting higher values of Thread Concurrency.
MRC is going to be more a CPU coin than GPU. Miners can decide to don't waste GPU resources for MRC.
Theoretically if you could find the optimal setting, your 280X could get 70KH/sec (Hashrate is reduced half when N increase 1).
And yes, now the coin is not favor GPU, nor ASIC, it is hard to mine MRC. What happen next? I believe the price then will increase soon
