I have real issues with the speed in the last couple of months.

Before it was newer a problem. Have used the modem worldwide with sim cards from the Airport and so for travellers.

Here at home I have also used it, but know I have to lucky if I reach an acceptable speed.

The latency is huge, and with a speedtesst I don*t get above 1 mbit/s.

Futhermore it takes very long time to open webpages and so.

Earlier it was also no problem to work remote via VPN with this modem, but this is not possible anymore.

Does anybody have a solution or an idea what the issue is?