A gave up mining this coin.
https://www.cryptunit.com/Calculator do not lie, it is correct for other coins I mine. And 20% less is unacceptable, it's big difference.
You will never get exactly what the calculator says and I bet none of you noobs complain when you get more than the calculator.
Luck of the pool varies also some days it is 85% some days it is 110%. I mine on hashvault and it is accurate. Stop complaining their is an element of luck involved in mining and people forget that