Awful
I have a macbook pro and a dell desktop. On the macbook pro I can press the funny key and space and if I search for an app by the first two letters it comes up almost instantly and I can launch the app.
I installed windows 10 on the desktop thinking it would be a good upgrade. I installed ONE APP which was Kodi. I launch the start menu type Kodi in and it does not find the application. I have had it for two months now and it still doesn't find Kodi so it isn't like it needed time to 'learn' the apps I use the most.
It is a POS if it wasn't for the fact Netflix on Linux is damn near impossible I'd wipe it.