Loading photo from grid view is slow (or does not happen)

Joined
Jun 23, 2017
Messages
44
Lightroom Experience
Advanced
Operating System:Windows 10
Exact Lightroom Version (Help menu > System Info): Lightroom Classic version: 7.0.1 [ 1142117 ]

Library grid mode. I click on a photo in a folder I have never opened in the new version and had not opened in a few months I get a spinning doughnut and "Loading." But it just keeps spinning. Loading loading loading... etc. After 20 mins I closed LR. I re-opened LR and photo appeared in 3 seconds. LR got stuck opening the file. Other photos in the grid view are opening OK. What has happened?
H9ow can I speed up the loading process?
 
Joined
Sep 29, 2007
Messages
22,874
Location
Isle of Wight, UK
Lightroom Experience
Power User
Lightroom Version
Cloud Service
So is it just that one folder Richard? Any videos or anything in there?
 
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