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XG 135 RX Interface Overruns

I am seeing RX Interface Overruns on both the LAN and WAN port of an XG 135 running SFOS 16.01.2 (I was also seeing the same issue when running 15.01.0 MR-3).  Both ports are negotiating successfully at 1000 Mbit/s and Full Duplex.  The LAN and WAN ports are directly connected into managed switches with 1000 Mbit/s ports.  I am curious if anyone else is seeing these issues and if anyone has any ideas on what might be causing them.  I know the number of overruns is low, but I do not understand why I should be seeing any overruns at all.  Surely the NIC cards on the XG 135 hardware should not have an issue and the kernel should not have an issue emptying the buffer.  I currently have IPS completely disabled for the known VoIP issues.  CPU usage is <5% and Memory usage is <40%.

Output from console>show network interfaces:

Port1            Zonetype:LAN  MAC Address:XX:XX:XX:XX:XX:XX  MTU:1500                              
                 IPv4 Addr(s): 192.168.X.X/24 Bcast:192.168.X.255                                   
                 IPv6 Addr(s): fe80::XXX:XXXX:XXXX:XXXX/64 (link-local)                             
                 Speed:1000Mb/s Full Duplex  Auto Negotiation:yes                                   
                 UP BROADCAST RUNNING MULTICAST                                                     
                 RX State: packets:113231913 bytes:51625538175 (48.0 GiB)                           
                           errors:0 dropped:0 overruns:589 frame:0                                  
                 TX State: packets:141233802 bytes:150218288390 (139.9 GiB)                         
                           errors:0 dropped:0 overruns:0 carrier:0                                  
                                                                                                    
                                                                                                    
Port2            Zonetype:WAN  MAC Address:XX:XX:XX:XX:XX:XX  MTU:1500                              
                 IPv4 Addr(s): XX.XX.XX.XX/28 Bcast:XX.XX.XX.XX                                 
                 IPv6 Addr(s): fe80::XXX:XXXX:XXXX:XXXX/64 (link-local)                             
                 Speed:1000Mb/s Full Duplex  Auto Negotiation:yes                                   
                 UP BROADCAST RUNNING MULTICAST                                                     
                 RX State: packets:139091563 bytes:151983334883 (141.5 GiB)                         
                           errors:0 dropped:0 overruns:352 frame:0                                  
                 TX State: packets:96154384 bytes:49519183728 (46.1 GiB)                            
                           errors:0 dropped:0 overruns:0 carrier:0                   


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