I upgraded to 0.14 from 0.13. Blender lags so much it's not usable any more. Never mind if the scene has anything in it.
I saw something about archimesh - but it's difficult even trying to deactivate a plugin with this laggy interface - so I've tried to deactivate it, but it's kind of the same.
Deactivated crowdmaster too for good measure, same.
It seems to be able to connect to my Mac though, on which it works without lagging. On 0.13, it failed.
I'm on Windows 10, Blender 2.79.