Okay, so some of you said that the hashrate on Rx560 4g is lower on 1.7.0 vs 1.6.9 on heavy algos (said Haven) - HERE
I took some time and made some tests :

Both cards are without bios mod.
Before every test i used the 'reset' button in ODT , just to be sure.
5 minute average result taken, same card, same clocks same driver same machine same everything.


RX550 4G:

Intensity : 15
Worksize : 12
Threads  : 2

1.6.9
Fragments 1   : 292 h/s
Fragments 32 : 270 h/s

1.7.0
Fragments 1   : 322 h/s
Fragments 32 : 304 h/s


RX560 4G:

Intensity : 15
Worksize : 8
Threads  : 2

1.6.9
Fragments 1   : 349 h/s
Fragments 32 : 340 h/s

1.7.0
Fragments 1   : 354 h/s
Fragments 32 : 356 h/s


So as you can see i can't reproduce the huge -100hs drop you said. As a matter of fact, i can only produce + hash, not -