patch can fix the RX issue you're suffering from. Anyway, would you
give it try the patch at the following URL?
The patch was generated against CURRENT and you may see a message
like "Disabling COAL_NOW timedout!" during interface up. You can
ignore that message.
It's been running for about 1:23 on the patched driver. I'm still
seeing the com_no_buffers increase: