7,904 votes204 comments · OneDrive on Windows » Desktop (Sync, Files On-Demand) · Flag idea as inappropriate… · Admin →
We announced differential sync at the SharePoint Conference in May. We’ve already rolled it out to our OneDrive personal users and plan to roll it out to the rest of our users by end of this year. See this blog post for more details: https://techcommunity.microsoft.com/t5/Microsoft-OneDrive-Blog/OneDrive-announcements-SharePoint-Conference-2019/ba-p/616047.
We looked at increasing the file upload limit via the browser to OneDrive.com. The reason we chose 1000 was because we wanted a number that worked well in most browsers.
I’d recommend if you are uploading thousands of files, it is easier to do it via the desktop sync client.
Will leave this open but likely won’t get to it for a while as it is dependent on browser tech.