Very poor LXC network performance

Hey folks. Im gonna need some assistance in debugging and possibly fixing this issue.

I have an Proxmox on a Lenovo SR550 host, with an LXC running OL 8.5.
The LXC has an Bacula Server on it.
We are observing:
1. Slow network transfer speeds of bacula - maximum 250Mbps.
2. Network failuers (timeouts/connection reset by peer) when running big network file transfers.
3. Affects ONLY ingress traffic towards the Bacula LXC. Egress traffic from it is mostly fine (or at least not 10x slower).
4...

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