Based on these assumptions, I would dedicate some testing to playing Basic Strategy with a 3-level negative progression. Lose three in a row, end the session or revert to a table minimum flat bet. Play this simple method in the free play games with no money at risk. You could open accounts at several casinos and fool around with several strategies based on these potential choppy patterns. If nothing else, you're having fun in the play free mode with no money at risk, and, who knows, you may find a strategy that would warrant risking real money.
Research is needed for the other games.
Depending on the type of RNG used to generate spin results, sometimes repeating patterns occur. Tests and charting are required to determine if repeating patterns emerge. As stated above, sometimes RNGs are not random at all. They simply repeat long lines of random numbers over and over again. With several hundred Internet casinos now online, this sort of an anomaly is certainly possible.