Yeah, the difficulty definitely went up, I used to mine 1.1 GRIN/day on Sparkpool then it turned to 0.3 cause of difficulty. When I switched over I was mining 0.5 GRIN/day. Any specific reason you like PPS over PPLNS/G payment scheme?
Before I can make 1.5 grin coin daily but right not drop around 0.5 grin which is too low because the difficulty increases too fast. If I'd switch all my rigs to this coin last January 15 maybe I made more than 50 grin coin in 1 day before the difficulty increase.
I thought that this coin is not going to trending but after few hours the difficulty jump too fast.