Hi, I have trayed new version today and found out strange situation with timeline. When I import timeline made it before automatically import clipdeck used to make this timeline. Problem is, every time you import some timeline clipdeck is appended to existing one and after 4-5 timelines you have long clipdeck of copied clips and slow down next program start.
Oh my goodness that sounds like a lot! When you import a timeline you can check the “replace clip deck” option and it will entirely replace the clip deck with the one that was saved with the timeline.
Otherwise you can see this section of the user guide to help clear out your un-used clips :
Hope this helps!
Seb