Best practices for multiple Libraries?

Hi everyone, I have 1500+ Manga volumes I'm trying to manage and thought I should create a Library structure like: Manga A-B, Manga C-D, and so on. However, I started getting a popup saying that i am "adding too many libraries". I'm curious if this structure is not a good idea and if so, why not? Having clumps of 100ish Manga per Library makes things easy to navigate but I'm not sure if I'm missing something. Obviously, having everything in one library will help with creating Reading Lists and such, but the trade off was having to wait to Update the library every time I add some new content.

What are some best practices?

Thank you

If you have all your files in a single hard drive you only need a single library in the root folder where you have everything. You can have any folder structure you want and YACReaderLibrary will scan and replicate it so you can browse it using the left navigation panel.

In your case:

MyManga
A-B
C-D
E-F
(the library goes in MyManga)

Or you can just use a subfolder per series, which is what I normally do.