Found the problem, for some reason it doesn't work with Miningpoolhub but works with Ethermine
Same story there... Dwarfpool all rejected eth shares, ethermine all accepted.
The miner seems great so far. On my R9 390 at 1150MHz and -dcri 35 it makes 31.5Mh eth + 550Mh dcr. The power usage seems a little bit higher, I had to increase fan from 45 to 50% to keep the gpu at 70°C.
btw I'm using 2x 750ti in the same pc without any issues.
Claymore You are a genius
thank is very helpfull https://cibu.io Probably this only related to Nvidia cards, or even Pascal family.