Since wins are relative to your stake, casinos can limit your winnings by restricting the size of your bets. Consequently, they also lessen your chances of clearing the wagering requirement by landing a few massive wins.
Assume that you bet $10 and hit Money Train’s incredible max win of 20,000 times your stake. In such a scenario, you will win $200,000. However, if you are limited to placing bets of $5 per spin, that same multiplier will only yield half the amount.
You should never exceed a set bet size limit, as casinos may review your bet history and confiscate bonus winnings if it finds out you have not played according to its bonus terms. In the worst scenario, you could even have your account closed.