RTP is always calculated over a very large sample size. Short-term results can vary significantly, but over the long run the RTP aligns with the declared value.
Even if we hypothetically talk about something like a “pool” or accumulation effect for payouts, this would not violate RTP. It’s essentially comparable to a progressive jackpot — funds may accumulate and then be paid out, even if this mechanism is not visible to players. Such mechanics are often used to make the gameplay more engaging.
At any given moment, RTP can fluctuate in either direction depending on variance, but over time it always normalizes. This does not affect the fairness of the game, as long as the overall RTP remains consistent with the certified value.
So temporary patterns or perceived “shifts” are part of normal variance, not evidence of manipulation.