Its not new to 1.5... but can you explain the kernel setting? I'm getting the periodic hang compiling kernel on GPU 1 (of an 8 card system).

"Some additional parameters you can use in gpu_conf:
"kernel" : 0-4 , IF 0, MINER WILL SELECT MOST SUITABLE KERNEL, OTHERS ARE : 1-FOR GCN CARDS, 2-FOR PRE-GCN CARDS, 3-FOR PRE-GCN EXPERIMENTAL 1, 4-FOR PRE-GCN EXPERIMENTAL 2"

I'm running Vega 64's. I don't know what GCN is referring to. Do I use setting 1?

Thanks