Full explanation
Two things are both true at once here, which is what confuses people. Le Zeus hits often (about 36.6% of spins) and still throws long flat stretches. The reason is that frequency and size are different measurements.
Most of those frequent wins are small low-pay letter combinations that do not even cover your stake. So your balance can drift down while the counter technically keeps registering "wins." The payouts that actually swing a session are concentrated in the Mystery Reveal chains and the bonus rounds, and those are much rarer.
Medium volatility describes the average ride, not the texture of any single session. Variance guarantees clusters: you will get good runs and you will get dead ones. A dry spell of a few hundred spins is well within normal for this kind of game, even though it can feel like the slot has turned against you.
There is also a perception effect. We remember the dry runs more vividly than the quiet wins that kept us going. None of this means the game is rigged; it means medium volatility is medium, not gentle.
Setting expectations before you spin
If you go in expecting steady payouts because the volatility is medium, a normal dry run will feel like the game has turned on you. Go in expecting clusters of good and bad runs, and the same session feels routine. The math has not changed, only your framing.
A practical buffer helps too. Bringing enough bankroll to absorb a few hundred quiet spins keeps a dry spell from ending your session before a feature ever lands. That is not a way to beat the edge, but it does stop variance from cutting your session short right before it might have turned.
Dry spells feel longer than they are because we count the empty spins and forget the ordinary ones. A medium rating describes the long-run average, not any given hour at your screen. Budget for the quiet stretches as a normal part of the game and they lose most of their sting, even when the math has not changed at all.