Free Spins Timing and Session Luck
Picking a session length is your call, because nothing tells you when the scatters will land. The bonus round arrives on its own schedule, and the result of any one session is random whatever the RTP says. Over thousands of rounds the figure holds its shape; in an hour of play it means very little.
Reading the game rules screen is the only way to see which version of the return is running. The listed figures sit close together, and the one in play is the one shown inside the game itself. Nothing on this page can tell you which of them you are spinning under.
Treating the top prize as a target is a mistake, because the x50,000 ceiling is a limit, not a plan. It is reached very rarely, and most rounds end far from it. The figure defines the most a spin can pay, and nothing about how a session will run.