Hi Lars,
I downscaled from 8 to 4 vCPUs and from 8 to 4 gig RAM - and the two obsd now seems to hold the packages decently.
As for performance optimization, I think the direction is good, and perhaps you could go even further if you have a load balancing device that can distribute the traffic among the multiple VMs.
In OpenBSD, the packet forwarding happens single threaded, so the performance of your system does not benefit much from the 4 cores.
Best regards, Gábor
