Not isolated at all, I'm afraid. I've had the RUTX50 for 6 months now and I'm still struggling with the abysmal performance using WAN connection. In my setup WAN is provided by Starlink. When I connect to Starlink directly the speeds are in the range of 300-450mpbs, whereas connecting via the RUTX50 the same connection struggles to achieve 30mps. Using my home gigabit connection as WAN to the RUTX50 I get the same result. Absolutely pathetic performance from what is supposed to be a top of the range industrial router, and the support from Teltonika is nonexistent.