Happened that many miners switched to X11, and new miner boosted hash for 50% and more. I had 47MH/s, now I have 68MH/s. Count that every serious miner did software upgrade, and we have 50% more hash now than we had 7 days ago with same HW.
i did not even update lol. I was still mining at 2.5 mh per r9 290. Damn.