Known rules before the spin, unknown outcome during it
Deciding how long to play Gates of Olympus starts with one fact: the bonus round cannot be timed. How often it lands is not known in advance. The result of one session is random, whatever the RTP, so a short session can pay well and a long one can stay flat.
Checking the RTP version means opening the game rules, because that is the only place the version in play is shown. Make that check before you set a session budget, not after the first spin, when the money is already moving.
Weighing whether the top prize is worth chasing starts with its size: the maximum win of Gates of Olympus is x5,000 the bet. That ceiling is reached very rarely, so treat it as a limit on the top payout, not a target for any session.