O2 HomeSpot - disgusting Internet speed with a good signal level!

The Internet works disgusting through O2 HomeSpot. All the lights are blue, the signal quality is good, the signal quality check is on https://www.o2online.de/service/netzstoerung/ shows very good signal quality, O2 HomeSpot tosit directly in the window while the Internet speed does not exceed 20-25 megabits per second.

I also use a VPN over UDP and get a lot of packet loss via VPN.

I would not like to terminate the contract, but if the quality of the Internet does not improve, then I will have to look for another provider, because with such an Internet it is a torment.