@viragomann said in Running pfSense 2.4.4 over a KVM VM in PROXMOX 6.1.5.:

You will get the best benefits of the processor features, when using host type. This passes all the features of the processor through to the VM, while KVM64 provides only a small amount of common features. For instance, KVM64 doesn't make use of AES-NI, even if your host CPU supports it.

with kvm64 you can set extra cpu flags though, including AES. All via proxmox gui.