Hello guys!
I have one issue and I don't know where to start. Couple of weeks before(2-3 weeks before) everything was fine .
I have 2 rigs x 7 cards, 1070, win 10, driver 398.36 and Phoenix Miner 4.0b and the speed was 230-231 for each rig, it was perfect since I changed with that DAG from 2.9e version.
All cards was around 32.7-8 and now both are with 225-226 total and I don't understand why...2-3 cards are under 32...
I have:
power: 60%
clock: -150
memory: 780
Maybe if I will update the drivers I will solve the issue? But this is strange because if it is like this all the cards will be the same.
On both rigs to have the same issue, this is why I don't understand, the same speed... if there was an issue with the setup, maybe it was different :\
thanks and regards!

Unfortunately, there is a gradual hashrate drop for the GTX1070 cards with the increase of the DAG size (we are seeing it from about DAG 200). To be sure that this is the problem, run PhoenixMiner in benchmark mode. To do this, add
-bench 100 (this will simulate mining with smaller DAG for epoch 100) to the command line, leave the miner working for several minutes to stabilize the hashrate and write it down. After that repeat the test with
-bench 250 and after running several minutes, note the difference in speed. In our testing we've seen drop from 174 MH/s at DAG 200 to 168 MH/s at DAG 246 with GTX1070. Maybe this can be solved by a driver update from Nvidia but nothing is certain. Interestingly 1070Ti doesn't seem affected (or at least the slowdown is much slower).
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Ok Regarding the phoenixminer 4.2b ... I have 2 mixed rigs- 8 nividia 1070s the other with 8 2070's and 5 -amd rx580's on each ... I updated both rigs amd to 19.1.1 drivers and nvidia drivers to the lastest 419.35 also I installed not just the graphics drivers but the psyx software as well... so far all have run 24+hrs with no problems ... in addition my rtx2070's have become WAY more stable and even on the clock speeds and incresed my hashrate by 20 mhs over miner 4.1 which would regularly freeze both systems... in addition to your post with the 1070's. ... I've experience with the latest nvidia drivers install on my third rig an INCREASE in hashrate by about 2mhs on a 7 nvidia 1070 rig... so this version is MUCH more stable i have been contending with CONSTANT freezes over the past 2 months with these rigs and miner 4.1 .. so far the last 24 hrs not a single issue I would recommend nvidia 1070 people update to the latest driver as well I have windows 10 fully updated to the most current update... fyi .. will let you know if anything happens but so far this is great and my overall hashrate has actually increased and become MUCH more stable on the 2070's and they are not even maxed out on overclock so they could possibly reach 43mhs per card..
Good work Phoneixminer and thanks for the constant developing.