OneDrive sync SharePoint bug re-syncs everything!

I'm bumping this thread because I have been dealing with this since Files On-Demand came out with no resolution.

I have one client with hundreds of thousands of files in a SharePoint Online library. Before Files On-Demand, you needed a hard drive large enough to hold all of the OD/SP data but at least it worked. When Files On-Demand came out, I thought it would be the perfect answer. Instead, if a user changes one file, the OneDrive client scans the entire library "looking for changes." As a result, that one file doesn't get synced for 5-10 minutes until the client has finished scanning.

Currently, my client can only check the folders that they need in OneDrive settings but that's a tedious step when they are constantly moving between project folders.

I would recommend to my client splitting their data into separate SharePoint libraries but I can't make that suggestion without knowing if it would actually resolve the issue. It's a waste of the client's money and my time.

As Office 365 users, It makes sense for them to use OneDrive/SharePoint but I may have to move them to a competitor if this doesn't get resolved. The added cost outweighs the impaired productivity.