Currently, the Windows events queue capacity is set to 50. Beyond that limit, a full scan is triggered from the root path. On middle/huge trees, it slowly kill Drive, the server and the bandwith.
For instance, with a potential fix where we remove that limit, all documents are synced on 2 different roots:
- 1225 documents (868 files / 357 folders): 8 minutes
- 7157 documents (5851 files / 1306 folders): 55 minutes