Number of Events on a Timeline
There is a maximum of 1,500 events per timeline, though you'll likely find the timeline editor slowing down significantly in the 500 - 600 range.
Note that we do say "unlimited events" throughout Preceden simply because saying "1,500 events max" everywhere is cumbersome and very few people ever wind up adding more than a few hundred anyway.
If you run into this limit, consider splitting your timeline into several smaller ones.
If you have any questions about this limitation, don't hesitate to drop us a note.