Approval is the stage most players overlook. After you request a payout, the casino's team reviews the request, confirms your identity and checks that bonus conditions have been met. Some sites finish this within hours, others take a working day or more, and nothing you do on the payment side can shorten it.
The transfer stage follows. An e-wallet can receive funds almost immediately once approval is given, while a card or bank transfer depends on banking hours and processing queues. That is why two casinos promising similar speed can feel very different in practice.
Marketing language such as instant payout usually refers only to the second stage. Read the cashier terms to see whether the stated time starts when you click withdraw or when the casino approves the request. The difference can be a full day, and it explains most complaints about slow payouts from sites that advertise speed.