How many Images can be handled in one Lightroom database?
I tried to orgnaize my imaged in multiple Lightroom Catalog files. But this is not really useful since I use the same images in multiple projects. So I decided to give it a try and have moved all in one catalog: 77000 Images starting from 2001 til now. Raw files as well as corresponding derivatives which I had generated by the different workflows I have been using throughout all the years.
It is of reasonable performance but not very fast. The LR database is on the iMac internal harddisk while the images are all on an external WesternDigital myBook. This drive appears to be slow if I work on it with the finder directly.
However it is, I can give the recommendation to handle everything in one and only one LR database.