Hello Michael,
Thank you for posting your query on Microsoft Community.
As per your description, I understand that your issue is related with the time its taking to open pictures on thumbnail. It may vary from one computer to another. While using the Windows, users need to ensure that its performance is up to date.
- How much time does it take for Thumbnail to display pictures, when you open full screen File Explorer?
- Have you installed any third party security program on your computer?
I recommend you to go through the following methods:
Method 1:
I would suggest you to perform
SFC scan and check if
that helps. The sfc/scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions.
Method 2:
Boot the computer in a
clean boot state and
check the status. A clean boot helps to verify if any third party application service or startup item is causing this issue.
Note: After you have finished troubleshooting, follow steps under “How to reset the computer to start as usual after troubleshooting with clean boot” in the article to boot to normal startup.
Method 3:
Run a full computer scan with the
Microsoft Safety Scanner
to make sure that the computer is free from virus.
Safety Scanner Disclaimer: There could be a loss of data
while performing a scan using Microsoft safety scanner to eliminate virus if any.
Hope the information helps. Let us know if you need further assistance with Windows related issues, we’ll be glad to assist you.