Question about Roborock S5 Max

So it manages about 1.5 centimetres for us (down into the bathroom). I don't know if it can do more.

Slightly rounded doorsteps that are only a transition from one room to the other are no problem. Mine does not manage thresholds that are higher than two cm. But it gets down the stairs well (but no longer up).

Depends on the height of the threshold. I don't have one.