The first and primary factor that affects the payment time at online casinos is verifying your account. You must confirm your account to receive the payment without delay.
Another factor is fast payout methods such as Skrill, Neteller, MuchBetter, and Paysafecard.
Use the same method for deposit and withdrawal. If you deposit one way and try to withdraw money with another, you will have to prove to the casino that you own the other bank account method.
The third factor is to be 100% sure that you have met all the bonus requirements and that your winnings are eligible for payout.