Not enough Mbit / s on the Ps4?

We had a 125k line at that time, on the cell phone and everything always arrived on average 85mbit / s. But on Ps4 always 60 very rarely 80.

Recently we have a 1000mbit / s line (fiber optic)

Since we have the new line, there are even fewer 3mbit / s - 15mbit / s and that is really not edible haha. Does anyone know what that could be or whether something is blocked? Have already tried changing the MTU settings, etc.

The current provider is Vodafone.

This is partly due to the PS servers. They are more or less throttled at the moment. If they have a maximum limit, it won't get faster.

Compare the performance of LAN and Wi-Fi on your PS4. Lan is usually much faster. Otherwise, check with a laptop or smartphone at Speedtest.net if you get other results. If the results are the same (bad) it is not because of the PS4 but because of problems with the internet connection. You could have the best internet line in the world but if you e.g. The router has 1-2 floors below that is of no use.

Already tried, arrive at Wlan 20, with Lan 30 at most and on the cell phone 500-700 average

And the router is less than 5 meters from me.