Hi there,
I using the lastest Ableton (often beta) version 9.1. Loading a project took me like half an hours or something similar, so I searched the internet to locate the problem. For me the solution was to delete a file called “files.db”. On my MAC I found this under:
USER->USERNAME->LIBRARY->APPLICATION SUPPORT->ABLETON->LIVE 9.1->DATABASE
My files.db was nearly 2GB. After I deleted the file loading was under a minute !
Warning! If you try it you may loose some settings. But I found it worth it.
I also found out that the files.db grows and grows by the background task “ableton index”.
Jürgen