Fortnite Ping high on Nintendo Switch?

So dear Good question community!
My question is why my ping is so high! I do not have bad internet. On the switch you can indeed add different profiles and sign up for each another account. My brother also has an extra Acc on the switch, which is connected to his Fortnite account. Everything runs smoothly there and he has a low ping. We live in the same apartment, use the same console and also the same switch!

Do you know why it is so?

Do you play handheld? Try to be as close as possible to the Wi-Fi router. Docked? Look, you do not sit between the router and the switch dock. The switch has a bad receiver.