I upgraded to 11.2 Big Sur
I tried the following on every machine :
->> (Display) I kept the 3D Acceleration, and I changed the display memory from 2 G -> to 8192 MB recommended (shared graphics)
->> (Processors / Advanced options)
- Enable IOMMU (this has good benefit as well)
- Disable other checkboxes (since no need)
Results: The 3 machines are still running continuously from 3rd Feb 2021 till 6th Feb 2021 without being crashed; i.e, keeping my iMac running always as a host machine.
I'll update you more on the results.
