It is incredibly slow and unstable. I spent literally weeks adding large (100gb library) into it. I had to add chunk by chunk. It was crashing constantly and process was so slow that I moved it to a separate machine. Then I tried to use web interface to search and it was super slow.
And I’m not even talking about non intuitive UI. For something that has supposed to be a library it’s nowhere near real library (alphabetical list of authors).