I recently changed my motherboard to a B450 from Asrock, as I wanted to be able to use the ASMedia USB controller instead of the matisse, but due to the limitations of the firmware and AGESA, the IOMMU grouping was awful. I've now got an MSI B450 that has an ACS Feature to section off IOMMU groups better, so I will be testing this out at some point this week. Another thing I noticed was if you put CPU Type Under SMBIOS in Opencore on Bare Metal it changes the CPU to Cascade Lake and shows in system profiler as a Xeon W 12-Core Processor which has given me some performance increase on my 3900X, but the CPUType doesn't seem to take on a Proxmox Installation, Any ideas why CPU type wouldn't work bearing in mind the HOST CPU is being used and not an emulated Penryn.... Any Ideas?
