Here is my summary of all previous posts on this topic. Here's what has (sort of) worked for me and what has not.
Demo of issue: https://youtu.be/oOEl653o81k
(I've personally never seen it this bad, but it does demonstrate my similar issue).
A. Turn Off Windows Media Player
- Go to Control Panel and search for "Windows features"
- You should see something called "turn Windows features on and off" -- click on that
- There should be a pop-up window with a directory-style interface (see picture)
- Uncheck "Media Features"
RESULT: Does not appear to affect this issue long term.
B. Disable Windows Accent Color Selection
- Disable "automatically pick an accent color from my background" option from Desktop background Personalization setting.
RESULT: Seems to reduce this issue, but does not eliminate it.
C. File Extensions
- In Windows Explorer, go to View>Options>View tab.
- Check/Uncheck "Hide extensions for known file types"
RESULT: Neither choice seems to affect this issue long term.
D. File Availability Status
- In Windows Explorer, go to View>Options>View tab.
- Under Navigation pane, check/uncheck "Always show availability status"
RESULT: Neither choice seems to affect this issue long term.
E. Disable Sync Provider Notifications
- In Windows Explorer, go to View>Options>View tab.
- Uncheck "Show sync provider notifications"
RESULT: For the last month, this has reduced the issue but has not eliminated it.
G. Disable indexing.
- A recent post mentioned that the issue only occurred after they started indexing their D: drive.
- Tested by disabling indexing completely.
RESULT: No effect.
In all instances, rebooting the computer seems to temporarily reduce or eliminate the issue. Maybe this is why some people experience an initial reduction or elimination of this issue, but it is temporary. In all cases, it appears to be related to the use of cloud file storage services including OneDrive and Dropbox. I use both services and am running a current version of Windows 10.