Set Ps4 correctly with the WLAN?

Am
3

I have a lot of gaming lag when someone is watching something on Netflix or something while I'm playing. At vodafone I was told that there are incorrect settings between the router and the Playstation. Does anyone know about it and what to do there? Vodafone said I should find out more on the Internet because they don't know what to do there themselves.

So far I haven't found anything about it. Does anyone know what to do?

ka

Have you already tried it with a LAN cable?

Because a LAN cable transmits faster than wireless.

Means: Lan cables are faster than normal Wi-Fi (wireless = wireless)

Am

Yes is connected with a LAN cable

St

Unfortunately, there's nothing you can do except complain to the Internet provider if it is tough, or even switch. Maybe also see if you can get a higher quality LAN cable that can transmit faster internet. Otherwise there's little that can be done as it is also known that Sony made the servers slower due to Corona.