OEM Connector missing events

Connector version is 10.12 and OEM Connector is 3.11, OEM Cloud Control 13c R2

The issue I'm seeing and can back up with packet capture is the connector not "seeing" the second event if they come at the same time.  For example, if OEM is configured to send an event for filesystem full at 80% and then 90%, and the polling interval detects 91%, it will try to send both a � and � event.  Only one makes it through, it's not always in order.  So, in this last example, either one or both may make it through, but no consistency.  I'm comparing a packet capture to the oem_event.log and they don't line up.  

Has anyone else seen this or know if the current versions of the connector and OEM content have performance improvements for the web services policies?