I just found out that my Lenovo dock also affects this situation -- when I undock my T480, wifi starts working properly. (No, the dock doesn't have ethernet cable attached.)
Still, I had problems already before starting to use the dock, but wifi performance was bearable then. With dock it is not.
I just found out that my Lenovo dock also affects this situation -- when I undock my T480, wifi starts working properly. (No, the dock doesn't have ethernet cable attached.)
Still, I had problems already before starting to use the dock, but wifi performance was bearable then. With dock it is not.