The maximum stake reward for each set of UTXO (what most people just call coin blocks if looking at the input control window), is 16.18 XQN.
With the current amount of coins in circulation, staking is highly competitive, and this means that most (if not all) stakes are capped at the maximum reward. In practice, this means that you will rarely ever get an actual reward of 1618% over your inputs, and your staking results will vary greatly with factors of luck, as well as UTXO (or block) sizes.
Based on my personal experience, factoring the max stake reward as well as the high difficulty, I would place the optimal block size today at somewhere in the region of ~600 to ~1800 XQN. Your mileage may vary. Happy staking!
I tried staking 10k of my XQN. I received 16 XQN in 5 days.... I dont know how i would ever reach this percentage of one thousand sixhundred + percent...
Break the total amount of coins in your wallet into your own multiple addresses.