Possible crash of services if more than one core allocated to OPNSense

[thebraz]

Hi,

for the first time I dedicated 4 cores to the Virtualbox VM hosting OPNSense (24.1 updated to the last patch).
Before, only one core was available and the system never had problems.

Since the change the system stops working, usually in a few hours; PC having it as GW not connected to Internet, WEB UI not reachable..............only console works.
Tried the shell: even ping doesn't work.
Reverting to one core "solves" the problem.
The functions activated on OPNSense are: NAT with Port Forwarding, an OpenVPN (Legacy, and wasn't used but is active), two rules of traffic shaping.

Tried to give a look at logs from console, didn't notice anything but I'd like some advice where (which logs) to search for answers.
And if someone else experienced similar behaviour .........please let me know.

If further info are needed just drop a line, please.

Thanks in advance