[cguZZMan]

@vab.patel the slowness depends on the speed of your internet, your device power and the amount of tv shows or movies the addon has to navigate. It won't obviously be the same as if you are scanning local files. But as a reference, my ~1TB tv shows with my shield tv and 200 mbps speed takes around 20mins to complete. My Xbox One takes longer even with the same internet speed. I think it will vary for everyone.
The advantage on doing it in this way could be the "native" library scanning kodi does every time kodi starts, or if you have your artwork in your cloud drive it should take it. Basically you use your cloud drive almost the same way you use a local folder and you can use any tool already existent to schedule or run the library scanning.

The other way is to export your folders to .strm files. The scanning will be faster because those are local files, but the hidden time people would not count will be the time it took to create/download all the strm files.
At the end the process will be a little more faster because artwork is totally ignored and not requested, and that will save time, but I'm not sure if it would be enough to say it's way better.
A disadvantage right now would be that you need to request the export manually. But I'm working on adding the feature to schedule automatic exports. That's the next release target. Probably next week.

The way I personally use it is with the strm files. I added the source mode to the addon with the idea of having a way to navigate my drive thru the kodi File manger and install addons from zips or copy any file to my local, but it evolved to the way it is now and that's good for me.

Anyway in both cases once you have everything in your library you will forget about the scanning time I think. Your library navigation will be faster because is from your local library db.