Hello,
Thank you very much for your report and I am very sorry about the issue!
As far as I know, Archicad should not have the ability to mess with Wi-Fi signal or settings. I am wondering if you are working in other software for a long period, does it also happen as with Archicad?
Looking forward to hearing from you!
Best regards,
Minh
Minh Nguyen
Technical Support Engineer
GRAPHISOFT