It all depends on the he machine. If the machine is on a payout mode, anytime. Usually dun need to spend too much time on the machine. If got payment, 10mins you will see result. So switch machine after 10 mins. By the way, slot machines nowadays is very complex. They always innovate to eat you. Just switch machines when there is no payment. Always bear in mind, must be patient in order to outwit the machines. Once when you outwit them, you feel shiok. That's why I only stick to slots and never touch table games.
Bro somehow cash cove always makan first.. Latter part than pay out... Only once I encounter, put in $50 press $2.5 and hit $900 within a min. Only once nia