Opening JPEG images on macOS 11 Big Sur very slow on hypervisor

Hello,

I installed macOS 11.0.1 (Big Sur) in VMware Fusion 11. When opening a JPEG (or PNG) image from the desktop via quick view (SPACE) or in Preview app via double click it takes several seconds until the image becomes visible. During that time the computer seems to be completely blocked. An open system information window is also not getting updates. It becomes even worse when the eventually appearing quick view window is closed again. Then the computer hangs for up to one minute.

A colleague was able to reproduce the exact same behavior, but using a different hypervisor: Parallels.

For me it does not look like a bug in VMware, but a bug in Big Sur itself when running on a hypervisor.

Has anybody experienced similar behavior? I would also be thankful for any hints where to report this issue officially. Thanks!

My host environment: macOS Catalina 10.15.7, MacBook Pro (15-inch, 2018), 2,9 GHz 6-Core Intel Core i9, 32 GB 2400 MHz DDR4

Best
Michael

PS: Just for completeness: macOS Catalina is running smoothly in VMware on my machine with exact same VM settings.
Hello, I have the same behaviour on my macbook pro (mid-2014 / 2,5 GHz Intel Core i7 quatre cœurs / 16 Go 1600 MHz DDR3 / Intel Iris Pro 1536 Mo).

Preview, copy/paste, all about viewing, moving, images is very very slow with macOs 11. No matter the format (jpg, jpeg, png, gif, ...).

I'm a designer working all the day with images .... please, help !

Thanks.
Opening JPEG images on macOS 11 Big Sur very slow on hypervisor
 
 
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