OP you should really pay close attention to this, switching coins is really bad for your miner, I heard this elsewhere before and I thought it was a complete bullshit until I experienced it myself, it was not with any SHA256 miner but with X11 and a couple of D3s, more than 50% of the hashboards that were mining on nicehash stopped working, the miners that were pointed to another pool mining dash directly lived a lot longer.

I have no technical explanations behind this, I am having a hard time saying this because it's hard to believe, I couldn't believe it when I heard it because it made no sense then, still makes no sense now to be honest, you either take my words for it, or simply ignore them.