That’s odd. We use it literally every day that it’s raining (admittedly not all that often in Japan), and have none of the issues you mention.

If you clean your drain maybe once every two weeks and it’s fine. Hair from showers and baths is a larger issue.

We all shower in the evening in random order, and clothes drying happens during the day when everyone is off to work.

Whoever showers first takes all the clothes out and dumps them somewhere until it can be folded.

Not trying to say you don’t have issues, just want to give a different perspective.