If you're sure you are not running under Hyper-V anymore then another thing you can try is to see if you have memory integrity turned on (see this post at the fusion forum)
https://communities.vmware.com/t5/VMware-Fusion-Discussions/Abysmal-Performance-in-Fusion-12-after-u...
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Wil
| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
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