[SOLVED] Question about performance of VMs

I have a question about the performance of my Ubuntu 22.04 VMs, running on my home server. In Proxmox 8, the default CPU is "×86-64-v2-AES'. When I keep using this setting, then the performance is really bad. However when I change the setting to "Default (kvm64)", then everything works really smooth. Now my question is: why is that? What is missing/wrong with my host system that is causing this?

The server runs on an ASRock B85M Pro4 mainboard with a Intel Pentium G3240 processor. I know it's old hardware and I want to replace it, but I'm still wondering what the best hardware is for my usecase.
it seems Pentium G3240 missing AES support, so iirc "x86-64-v2-AES" is emulated, you can choose "host" to get all features host cpu and best performance.


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