See https://code.wildfiregames.com/D3482#153560. This adjust stats to reduce instances of units phasing through each other, to a level that should be acceptable for the release.
The problem is that melee cavalry in MP can move by 10 meters in one go, which means they tend to overshoot their target (range = 4). By reducing that to 9 meters per turn, and increasing range to 6, it's more likely that the cavalry will end up in the happy path.
Comparison with D3482: