5$/day with gtx960? 40$/day with 1080ti? Does nemosminer knows when I look at it and tells me jokes? 
which pool are you using can you send me a screen shot of price error?
my 1080ti's @79% tdp are doing $20-30 each a day atm... (i even got my 750ti's back out they doing $2-4 a day)
Regards
Nemo