Man have I had some serious problems with my last running mining rig that has been cranking away on CN variants for over a year straight but I just wanted to thank the OP for making a great miner which easily earns its devfee, and I am well aware I can run JK's version of xmr-stak compiled with no devfee.

Because I am still sorting out problems with the rig (keeps BSOD'ing with a Kernel Power 41 error) I just have a single RX 570 running but getting a consistent 810 H/s with Adrenalin 18.6.1, Afterburner set to 1200/1900, and the gpu_conf parameters are intensity 58, worksize 8, threads 2, fragments 8. Temp is a cool 52C, but that's with just one card loaded on the Onda d1800 6-card mobo.

The same card gets around 735 H/s with xmr-stak with otherwise same/similar configuration and settings; needless to say, I'll gladly pay 0.85% to get 10% more hash.