For example my 3100 Sol/S seven GTX1070 RIG is supposed to pump out 2700 BTCZ/day and I am only getting about 2200 BTCZ/day. Which is very good most other pools pay about 60% of the calculator numbers. O and before you say its random, no its not, when you have a pool of 20+ miners and compare one week of gains there is absolutely no luck involved anymore.
How many video cards do you have? I'm in a dilemma, I don't know if I buy mining equipment or if I buy the coin.
Now, do not invest in GPUs mining equipment : the equipment is actually very expensive and the new nVidia GPUs generation will come in some 6 months. Buy the BTCZ coins before the pump.