System Firmware Version: What I found was that reinstalling the VMware Tools helped. So it was a couple of iterations of 1 make some update, 2 reboot the image in VMware, 3 if not done with upgrades, go back to step 1. When re-installing the VMware tools, it mumbled something about updating the pre-boot volume. Before doing this update, restarting Big Sur would result in the boot process failing once then recovering.
After this update, that problem appears to be resolved as well. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. Labels 2. Labels Labels: laggy slow.
All forum topics Previous Topic Next Topic. Technogeezer Expert. Have you tried Fusion 12? Fusion 11 is not supported on Big Sur. Right, I'm running So a few questions: - Did you upgrade the virtual hardware and vmware tools on the guest? My host has 6 physical cores, while my VMs have between 2 and 4 processor cores assigned to them. On the one Mac mini where performance is excellent, performance is still great when I assign all 6 cores.
For what it's worth, I cannot agree more with your other sentiments about Big Sur. I cannot fathom why I now have to live in perpetual loss of the lower left and lower right corners of my VM screens. The former is what I was offered for the first time tonight i.
Fusion didn't give me a pop-up window for it under Catalina. And selected. Update: I think I have found what makes this bug materialise. At least, I can now consistently reproduce my issue. See the attached screenshot. When the VM setting "Enable hypervisor applications in this virtual machine" is enabled, the issue is only present when "Memory integrity" is turned on inside the VM.
Turning "Memory integrity" off vastly improves responsiveness, performance and brings the host CPU load under idle to reasonable levels. Opening "My computer" inside the VM from a blank desktop took 9 seconds. This bug was not present before upgrading to macOS Big Sur.
Opening "My computer" inside the VM is practically instantaneous. By more than a decade. So that alone isn't gonna be the culprit here. Something comparable might still be causing the same thing. Are you running an antivirus in the guest? The three I have up all require that I use Virtualization Based Security which seems to be the problem in Big Sur any sort of nested virtualization.
I have an 8 core i9 16 logical cores total due to hyperthreading being enabled - In vmware it also reflects that my processor pool is 16 cores.
Something is wrong with Apple's hypervisor or VMware implementation in using it. Apple has probably just created a terrible hypervisor "middle-man" that is extremely bad at its job. Thanks for this idea at least - With the pain it took going back to Catalina from Big Sur My Time Machine restore wasn't working right, I had to create a bootable USB key and obtain the Catalina install app, which of course wasn't working per Apple's instructions and then install Catalina again and then do my Time Machine restore again.
One day, when I'm not annoyed with Apple, I may go back and try this. I feel like maybe this is just doing the same thing that VMWare is doing with having you turn off the side channel stuff.
Perhaps it isn't allowing the VMWare change from working though. Worth a shot at some point. Windows 10, not sure exactly which build you are on, there are some issues with running VMs and the most recent insider previews.
Are there any function to let me export my settings for you to view? It felt sluggish before BigSur so it isnt because of that. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. Orfeous Contributor. VMvare Fusion Pro
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