+1, only seeing high net I/O in my case but that may be a bug with latest version of Podman not counting Block I/O. I had to limit those containers to 1.5 cores and limit VM disk read/writes otherwise it was spiking up IO delay on my Proxmox VE rig to 60%.
podman stats (containers were up for 10 hours)
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Comment by @MrRubberDucky
podman stats(containers were up for 10 hours)