i dont adjust intensity at all when it was working, with cpu pow hash rate is higher. This is from release notes:
A part of POUW work that was done on the CPU's is now done on GPU side. This unfortunately comes with a penalty : less hashrate. If you have a good CPU which can run all your cards without issues, then add the --dynex-cpu-pow parameter
and the additional work will again be calculated on the CPU side.
Is the GTX 1070 the only videocard in that rig or are there more?
If more try --dynex-cpu-pow 0,1,2 etc.
Just a guess.