Ps4 upload far too low, why?

Have a 400 Mbit download, 25 Mbit upload Vodafone contract. On the Ps4 with LAN, I get 200-300 Mbit download, which is quite sufficient, but only 2-4 Mbit upload, which leads to game printers. How do I fix the upload problem? According to Vodafone there's no problem here. In front. DNS, MTU changes I have already made, logically without success.

I gambled earlier with a maximum of 1 Mbit upload and it went great.

Even if your upload is a bit low, in reality you will never actually reach the nominal value, long and significantly lower upload values for smooth playing.

It depends on the ping eig.