RTP is a long-run average, not a session forecast: 96% RTP means a 4% house...

https://charlottessuperjournals.tearosediner.net/why-no-system-works-isn-t-moralizing-it-s-just-math

RTP is a long-run average, not a session forecast: 96% RTP means a 4% house edge over time. Volatility describes how uneven results can be. In a short session, wins or losses can differ sharply from the average, and your balance may fall quickly.