@PhoenixMiner: I started using version 4.2c this week. But the hashrate was much more unstable than before. Now I'm using the previous version again.
If you have nvidias add -mi 10 to your settings and it will work like previous version
Thanks for your reply but I've got rx570. Does this setting help here, too?
I think that it will not help you. Strange, PM haven't said anything about modifying the AMD kernels in the new version.