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Apple Intelligence has also begun language expansion with localized English support for Australia, Canada, Ireland, New Zealand, South Africa, and the U.K. Learn more >
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Hello,
I have a relatively new imac / Ventura and the thumbnail icons (psd, png, and AI files) load very slowly and sometimes don't appear at all. It's so frustrating. How do I fix this?
iMac (2017 – 2020)
I found the solution in my case on High Sierra and it might be the same on other OS versions.
The problem was a huge memory usage by QuickLookUIService.
Open Activity Monitor and select MEMORY then click on the MEMORY column at the top left. Set the direction to ^. If QuicklookUIService is using a large amount of memory it will be near the top. Just Force Quit this "Service". It will start again with less memory being used.
I found the solution in my case on High Sierra and it might be the same on other OS versions.
The problem was a huge memory usage by QuickLookUIService.
Open Activity Monitor and select MEMORY then click on the MEMORY column at the top left. Set the direction to ^. If QuicklookUIService is using a large amount of memory it will be near the top. Just Force Quit this "Service". It will start again with less memory being used.
Do you have any anti-virus or 3rd party optimizing software like CleanMyMac installed? These packages do nothing more than cause more grief for users.
Also, if none of that applies to you, try rebooting into safe mode to allow the system to run diagnostics and then repair problems it finds.
Start up your Mac in safe mode - Apple Support
Slow to load thumbnail icons on IMAC / Ventura
