Additionally, I've observed frequent occurrences of TCP Out-Of-Order packets, Duplicate ACKs, and Fast Retransmissions while monitoring of a standard bridged interface using VZBridgedNetworkDeviceAttachment only.

I fixed the second issue by adding a tiny, super-fast delay. Boom! No more "ENOBUFS" error! Regarding the initial issue, do you believe that modifying the appropriate value and adjusting the pyramid of doom logic for vmnet_read/vmnet_write to accommodate multiple packets simultaneously would be an effective solution?

I genuinely appreciate the time, effort, and care you’ve put in. I'll take a deeper look into all the options you mentioned. Thanks!