As in many casino games, the cycle is determined by the potential payoff. However it is well known that there are "luckier" machines which are scattered around, in the smaller joints, and are harder to find, because the big casinos put a lot of effort into making the machine jackpots very hard to score. You can get more details at this video
poker site.
The numbers are a bit scrunched but he makes a good point, you need to decide which pot you are hoping for and make your play according to that. Or you can try combining cycles but you will need an equation calculator for that…