Sorry for the delay on this @Asarin. This occurs when the routing between two people is incompatible. Are you able to connect to a mobile data hotspot - only for a short period - to see if the same issue occurs?
This thread was added on January 02, 2023, with posts from FatsharkJulia, FatsharkLev.
Hi @Asarin,
Sorry for the delayed reply! As you don’t have an issue using a mobile data connection, it indicates it’s a network/router issue. As Julia mentioned before, it’s possible that the routing between your friend is incompatible. In this situation, I would recommend contacting your ISP and explaining the situation as they would be better suited to help.