Changes for me:

GTX 1070s went from ~630 H/s to ~660 H/s (memory oc'd to 4 GHz; core @ 1.9 GHz)
RX 570s went from ~700 H/s to ~575 H/s (BIOS timing mod; memory oc'd to 2.4 GHz; core uc'd to 1.1 GHz)
Rig using 900W total compared to previous 1100W
Using xmr-stak (latest) w/ Ubuntu 16.0.3