Is this setback so "normal"?

Hello everyone, in our new building, one thing bothers me, namely the loud water hammer when the washing machine or dishwasher is running. I recorded the whole thing to show you and to ask for your opinion. One video is of the check valve on the heating system (air-water heat pump) and one directly at the pressure reducer. The water was simply turned on in the kitchen and then abruptly turned off again.

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No, not normal...

Maybe the pressure is simply too high? What pressure is set and what does the pressure reducer say?

I see the water meter at the bottom right and then a pressure gauge but where is the flow filter?

Maybe the pressure is simply too high? What pressure is set and what does the pressure reducer say?

It is set to 4 bar.

I see the water meter at the bottom right and then a pressure gauge, but where is the flow filter?

I don't think I have one. Should I have had one? We built in 2016. Then I will talk to my construction company.