Tuning the FortiGate-VM instance
In vCenter, select the FGVM guest, and from Summary choose EDIT from the VM Hardware section.
Increase the number of CPUs as needed for the solution. The frequency reservation may need experimentation to maximize, but is based on the frequency if the cores and the number you have allocates. The scheduling affinity allows the effective pinning of CPUs to the FortiGate-VM instance. The CPUs chosen are based on matching the NUMA to the NICs installed, and also the lower numbers one have been left for the usage by the hypervisor itself.
You should allocate and lock sufficient memory to the guest. This is mandatory for SR-IOV.
Remove all but the first network adapter. You will create traffic interfaces later. The remaining interface is used for management.
Click OK.