I do agree with the Hashrates you are posting, but I do not see any difference between the different memory types on my rig.
How many 1060s are you running with Hynix/Samsung memory?
Hynix 740-745kH/s, Samsung - 780-785 kH/s. Have 6 cards with Samsung and 3 with Hynix, 2 card 1050 Hynix-Samsung give me 410-418, memory does not play any role, 1070 micron - 1170