Website delay 5-10 sec

Hi,
when Secureline is activated, websides reacting with delay from about 5-10 seconds. This only happens when connected via ethernet. If connected on Wifi (same PC win 10 2004) there is no delay.

I would use Wifi, but it is too slow for my internet connection (500mbit).

I haven´t had any slowdowns on downloadspeed or ping and the websides are loading very fast. It is just this 5-10 seconds “nothing happens” before the websides appear.

Tried: Reinstall Secureline, disable wifi, fix ip adress, new lan-cable, different browsers, driver update networkadapter.
Unconnect VPN solves the delay.

Any ideas?

Greetings
FM

Have you tried any of the other Server locations?

Yes. I did this several times.