There was some network disruption yesterday, likely due to current events increasing the demand on ISPs and Steam. This should have resolved on it’s own - see if it’s still occurring today.
Any VPN will do as a workaround. Tethering would be one aswell, but the ping will shift a lot.
Since the Pandemic wont go away from one day to the next and the Tcom being infamous for its customer services that goes beyond simply posting troubleshooting faqs, that will be the solution for the near future.
Yep, can confirm, using a VPN is a thing to counter the Telekom timeouts. Works well, although the connection is going to be a little bit wonky. Good thing is though, if you prefer to play at night, around ~11 p.m. to ~10 a.m. every day (german time ofc), the problems seem to be non-existent so you don’t need the VPN anymore. I could precisely set an alarm clock for this…