Be glad they are doing it. Let them do it at their own pace. Complaining will only make things worse.

They don't have the experience you have doing all these tasks. They could do it fast but half-assed. Or they can do it slow but good enough. But they can't do it fast and good.

You sound like an employer who thinks tasks can to be done in an instant.

It takes longer than 3 minutes to empty a dishwasher for example. It just feels that way for you because you can disable your brain when doing so. They can't, because they don't know where every little thing is located in your kitchen.

I urge you to time it next time. And not to speedrun it either.