Although cloudHQ has real-time sync, we are also bound by the speed limitations of the different cloud services.
In OneDrive sync, the upload speed is from 2000 to 10000 files per 24 hours. There is no bandwidth limitation, but creation of files is throttled down to this rate. For that reason, it can take some time to upload files.
Microsoft reserves the right to change these limits at any time depending on accounts usage. As of now, OneDrive’s API has a limit of 100MB size per file. Please click here for more details: Microsoft’s explanation.
Important note: OneDrive for Business does not have the above limitations.