This is why I continue to use Dropbox for daily work and constantly changing files. The syncing is unmatched. It’s surprising how bad the others like OneDrive and google drive are in comparison.
OneDrive completed its rollout of differential sync in April 2020[1], after beginning in Sep 2019. This should improve OneDrive’s sync speed substantially.
They already had this for Office files, it's just finally extended to all file types after several years. It's still nowhere near as fast as Dropbox, especially for complex directories, and the fact that it took until 2020 to finish this feature shows how far behind they are.
I recently switched from Dropbox because of the added device limitations for the free tier and because I don't really want to pay 10 euro a month for 2 TB of space when I only need 10 GB. Got myself a Nextcloud instance for third of the cost and I have to say that the syncing absolutely sucks. It's so bad that I'm going to migrate away from it as well.
Not going back to Dropbox yet though. I'd rather try out Google Drive since I consider it to be much better consumer plans.
I stopped paying for Dropbox precisely because there was no sensibly-sized plan (150GB working set, was paying for 2TB and an extremely bloated desktop client). Decided to move everything to a combination of OneDrive (which I had been resisting for years) and SyncThing (which is OK but crufty):
I had the same issue, especially w/ syncing a large amount of small files, and switched from nextcloud to seafile which works way better on the same hardware.
[1] https://techcommunity.microsoft.com/t5/office-365/onedrive-c...