I recently had the problem that my VLC Media Player took about a minute to start. First I didn’t know what caused the problem until I remembered that I imported my Music Library into VLC, so it always scanned the whole Library to import the meta data.
To disable the Media Library do as follows:
- Open: Tools -> Preferences 
- Under Show Setting select «All» to show all settings 
- Go to: Playlist 
- Uncheck «Use Media Library» 
- Click «Save» to finish 
Now your VLC should start up quickly again.