nicehash is not a mining pool. is a hash market platform. when you join an algorithm you are essentially selling your hash to buyers who buy hash to mine coins with that algorithm in other mining pools.the prices are determined by the buyers and the average payment price has the standard, payment per share PPS -4% that nicehash keeps. in a few words the profit is the average price of the buyers -4%. it is better to go to another mining pool that does not have so many reservations.