High CPU Load after Host changed

[sunghost]

I have latest pfSense as KVM on Proxmox V5 on Debian Stretch. I changed the host hardware to a less power consumtion one with intel n3700 cpu. After that i noticed that the cpu load is at 100%. First i thought it is because of a lower cpu as before and gave the VM one more core, but it didnt changed. I switched between all virtual network adapter but the best is intel or real with no effect of cpu load. i have no further modules installed in pfsense, just firewall with 2 realtek nics.

i search the forum and found some network settings und advanced, but it doesnt help. Has anyone an idea?

dev.cpu.1.cx_usage: 100.00% last 284us
dev.cpu.1.cx_lowest: C1
dev.cpu.1.cx_supported: C1/1/0
dev.cpu.1.%parent: acpi0
dev.cpu.1.%pnpinfo: _HID=none UID=0
dev.cpu.1.%location: handle=_SB.CPUS.C001
dev.cpu.1.%driver: cpu
dev.cpu.1.%desc: ACPI CPU
dev.cpu.0.cx_usage: 100.00% last 467us
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_supported: C1/1/0
dev.cpu.0.%parent: acpi0
dev.cpu.0.%pnpinfo: _HID=none UID=0
dev.cpu.0.%location: handle=_SB.CPUS.C000
dev.cpu.0.%driver: cpu
dev.cpu.0.%desc: ACPI CPU
dev.cpu.%parent:

-> Powers aving is not activated and activate it didnt changed anything