Working with Microsoft Sharepoint

Hi,

my coworkers and I collaborate on AE projects (no team-projects) using Sharepoint. This workflow works really well with Photoshop, Illustrator and Indesign but After Effects doesn´t seem to like it.

We work with MacBooks and always collect/package all media on the sharepoint but more often than not After Effects just loads the file for 10-20 minutes when my coworkers open the project. Other times the start-up time is quite short but the media is missing even though the files are collected. 

We already tried this workflow (which works but is to time consuming):

1. collect files and save it on the sharepoint

2. If someone else needs to make changes they copy the whole folder to their local drive and when finished they collect the files again and save the new version to the sharepoint replacing the old folder

Is there a better and less time consuming way to do this? Thanks in advance!