As for the 2Mbit connection that should be good enough.
Clarification on @Jamie post. The Glowforge needs a Wifi connection with its **own internet access. And so does the machine that is controlling it. The glowforge plugin/portal is the only thing that has a direct connection with the unit.
**Own in the sense as it treated like any other standalone wireless device that you have on your network.
So Plug-in >>> Internet >>>> Glowforge ‘Cloud’ >>>>> Internet >>>>> Glowforge Basic / Pro.