It's not fully cooked in general. Try killing explorer.exe and resizing a UWP app; Something that should have nothing to do with app windows is fiddling with a

It's not fully cooked in general. Try killing explorer.exe and resizing a UWP app; Something that should have nothing to do with app windows is fiddling with app frames. General nonsense in how the UWP system works is responsible for a lot of lagginess and the generally immature feel of the system. I would love to love Edge, but it really is crippled by the artifacts of its UWP implementation.