When using Big Sur the CPU will suddenly spike to 90-80% usage. It will usually go back to normal after a few minutes but it happens often enough that it makes Big Sur unusable as a guest os. It don't think it's a memory issue as I've assigned 32GB of RAM to the VM and 3 CPUs. It is especially bleak when trying to run the Twitter Catalyst app. With that app running, the CPU never goes back to normal and I have to shut down the VM, as it's nearly impossible to get Big Sur to perform any action. Activity Monitor doesn't show anything crazy. Has anyone else experienced similar issues?