Support for differential or byte-level or block-level syncing with Box Drive
This type of transfer means only the changed parts of the file are transferred instead of the whole file.
Here's a good explanation:
We currently do not have this planned on our roadmap. Please keep the feedback & use cases coming to help us prioritize this in the future!
Boxes biggest problem is performance. Dropbox has done this for a decade, and it's the killer feature. Without delta sync large file changes can take hours to show up on the share of other computers