A workaround for rigs with mixed cards (Polaris and old cards): start two miners with "-di" option, one for Polaris cards and second for other cards. Use "-mport 0" option to disable port for remote management and avoid red message in second miner.
I will fix it soon.
Yeah, great. I will fix it soon.
- PC1 RX480 130-140 H/s (AMD CPU 3%)
- PC2 RX480 130-135 H/s R9 280X CU II 95-100 H/s (i5 Pentium CPU 3%)
All stock settings.
Miningpoolhub shows ~ double Hashrate.
I'm going to sleep now. When I wake up, the world may be a better place 
Just slept for a few hours and WOW!!!I didn't expect anything else from Claymore
P.S. CPU-Mining an Altcoin such as XMR at the same time is not a good idea, because it reduces the Hashrate significantly.