How quickly does CeX pay?

Could you elaborate on the payment processing times at CeX, specifically in relation to cryptocurrency transactions? Are their payments processed instantly, or does it take a few minutes, hours, or even days? It's crucial for customers to understand the timelines involved when dealing with their finances, so any insight you can provide would be greatly appreciated. Additionally, are there any factors that can affect the speed of payments, such as the time of day or the cryptocurrency being exchanged?