@stevencavanagh
Forgot I had not replied to this"…..
Anyway saw nothing on packet counters or packet capture.
However, managed to solve this issue over the last few days! With the help of the forum removed the LAGG between Pfsense and the switch and ran successfully on a single cable, despite it taking everything down initially until I killed the state and it all sprung into life.
I then backed it up, opened up an editor and changed the interface to the new card, uploaded and killed the states and all worked.