Automatically mount available folders, without scanning anew

I had ALL my folders scanned and then I had to reboot.
Then I was only able to connect via Hotspot (I don’t use Ethernet) and the media folders were not any more visible for V.
Then I was able to set a WiFi connection to those media folders but the folders were NOT mounted automatically.
So, to force a manual mount, I opened Folder->Edit and pressed Save.
Then V began scanning the whole folder again, making the prior scanning of no use.
This takes a LOT of time, during which V cannot play normally because of the CPU load (RPi 3). And this will happen on every reboot, making V practically unusable or very hardly usable.

Wouldn’t it be better if V automatically mounts the folders which become available,
NOT scanning again everything which was already scanned?