I've been mining for about 3 months, I have 20 mining rigs, using Minerstat

the profit switching is amazing, with 20rigs, switching to some shitcoin instanly and selling it using bittrex auto sell features.

My issue is that on whattomine and on minerstat it says that I should be mining for about 500$ a day when i'm barely making 300$, this has been going on for a long time. I'm using all the popular pools.. selling fast, heavy mining power. Where should I look to fix this "leak" ?

I heard that PPLNS pool could be a problem, so I switched all my pool to PROP pools, i'm looking into Awesome Miner to test if I get the same issue.

Should I drop the profit switcher and only mine the same coins afor a weeks, PIRL + LBRY has been pretty profitable for a while now.