I have win 10 and 6x 1070 GPUs, and i using last PM version

Hasrate contanstly falling. Until today I using nvidia drivers 388.43 today I change (update) drivers to 442.59. Hasrate is still falling. My OC settings are
https://imgur.com/wj5jLir.png

Current PM settings:

PhoenixMiner.exe -pool eth-eu1.nanopool.org:9999 -pool2 eth-eu2.nanopool.org:9999 -wal ETHaddress.rig01/mymail@mymail.me -epsw x -ftime 10 -rmode 2 -lidag 2 -wdog 1 -astats 1 -proto 2 -logsmaxsize 1

Does anyone have any idea why hasrate falling. Last 3 maybe 4 months I have avg. hasrate aournt 187 to 189 MH/s 6 months ago constantly 194.7 MH/s.

Tnx for all you answers and tips.