Loading metadata int database takes long and consumes lot of CPU

[BorisKostrhun]

I run the screensaver on a folder with 120k+ pictures/videos where 99,9% no changes in file structure happen. After every start the screensaver rebuilds the list of files + the metadata database which loads the disk + CPU - what affects the performance of background tasks (e.g. backup of the picture library).

Is it possible to implement one of following:

1. configure how often the database is being rebuild (e.g. once a week/month)?
2. limit the CPU usage to e.g. 2% of CPU capacity / disk troughput
3. stop using the metadata database completely
4. limit the time when screensaver updates the database (e.g. 01:00 till 04:00)
5. something else?

BTW: Big thumb up for yor screensaver - I like it!