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Lankyman

macrumors 68020
Original poster
May 14, 2011
2,083
832
U.K.
I have spent a considerable amount of time trying to get a Windows 10 VM working successfully on a 2019 5K iMac but it looks as though I am going to have to admit defeat and go back to Parallels. Getting the VM up and running isn't the issue, that was a piece of cake. The problem lay in near constant lockups, especially the minute a browser was fired up. The iMac has 24 gigs of RAM so wasn't short of resources. I think I've tried every permutation possible in Vbox settings and then some but nothing made any difference. CPU 1 core, 2 cores, more than 2. RAM 4 gigs, 8 gigs, 12 gigs, 3D acceleration on 3D off, audio enabled/disabled. The only way it run it was in a very small window which was near impossible to use due to its size. Mac activity monitor showing a massive spike in CPU each time a content rich webpage was accessed e.g. 305%.

Has anyone managed to crack this with similar hardware? I suspect the iMac's 5K screen to be the culprit. BTW Parallels works seamlessly.
 
I am running Catalina. However, I think I may have cracked it. In my disgust I removed the virtual HDD from the VM and purged all vestiges of Virtualbox from MacOS. I then reinstalled VB and reattached the virtual HDD. The VM is now running quite well. The only thing I’m not happy with is the somewhat clunky scrolling. Why can’t Windows (or VB) do smooth scrolling like a Mac?
 
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