The number of files is obviously known, as it is displayed in the status bar on the lower right. What would be extremely useful, is to be able to see the sync queue. It depends on how good your hunch is for finding the folder pair that might be causing the issue at the time. This takes a bit less time than re-synchronizing the whole storage but is still far from ideal. This kind-of confirms my assumption that there is one (or few) files that are stuck, preventing thousands of other files from synchronizing.

I tried a less-damage approach and have been removing the Sync folder pairs until the sync starts again. Downloading hundreds of gigabytes on a mobile connection is absolutely NOT fun. To me this, while effective, is definitely the least practical solution. The most common advice for a stuck sync has been to remove the profile (the database and the cache folder) and re-synchronize everything.

I see that others are experiencing this often so I'll share my findings. As this is the most common issue I've experienced, it would be useful to have a more precise way of resolving it.

Pcloud rsync