Have you set any extra CPU flags?
I used to have qemu working in eve-ng. But now eve-ng cant see that kvm acceleration is active. Do I need to change CPU settings with proxmox 6.0 `?
What CPU type to you use? Set it to "host" to ensure the "VMX" or "SVM" (depending on Intel vs AMD) flag gets propagated to the VM.
That flag cannot be set for other CPU types via gui yet.
You do not need any AES flag, that's for encryption not nested virtualization...Intel xeon e5-26xx, can i setup the AES flas in shell?