Found an answer, took me long enough given it was right in front of me the whole time... On Line 60 in the YAML, you can disable Stats - that probably cuts down 80% of the garbage data in EVE. You can further disable logging (in EVE) under metadata for DNS, TLS, TCP, HTTP, etc. -- YMMV, but I feel keeping that stuff is fine since you can filter it out using something like Kibana or Splunk readily.

@hannes-hutmacher I think will be better if you save your config to xml file and then make fresh install including xml import option. Please see https://docs.netgate.com/pfsense/en/latest/backup/index.html