The fluctuation of mining yield is mainly affected by hashrate fluctuation and difficulty adjustment.
1) Hashrate fluctuation: Essentially, hashrate output is an unsteady and fluctuating process during mining. The factors of power, network, miner status will also affect the hashrate considerably, resulting in changes in profit.
2) Difficulty adjustment: The difficulty of cryptocurrency will be adjusted after a certain period of time with an overall tendency to increase. Therefore, it is general for miners to have less mining yield while maintaining the original hashrate.
How can I set mining difficulty for miners?
1. Set password by “d=1024” to fix the mining difficulty of a miner.
2. Recommend Difficulty = Hashrate (TH/s) × 1000
For instance, Bitmain Antminer S9 has 12T hashrate. Then the recommended difficulty would be d= 12 * 1000= 12000