Item frames send map data to NPCs, causing major TPS loss

[AnttiMK]

/version output

This server is running Paper version git-Paper-391 (MC: 1.17.1) (Implementing API version 1.17.1-R0.1-SNAPSHOT) (Git: 3e73355 on ver/1.17.1)
You are running the latest version

/version Citizens output

Citizens version 2.0.29-SNAPSHOT (build 2419)
Website: http://www.citizensnpcs.co
Author: fullwall

Log file

https://paste.denizenscript.com/View/90653

config.yml

https://paste.denizenscript.com/View/90650

saves.yml

https://paste.denizenscript.com/View/90652

Profiler report

Spark: https://spark.lucko.me/COnWBnhsvn
Timings: https://timings.pl3x.net/?id=4570e43d44194f709db504080dbe97ae (ignore the Pl3x link, server is Paper)
After removing Citizens: https://spark.lucko.me/JTofJ4CC4G

Description

Our hub has ~200 maps in item frames, used to display large images to players. I noticed a lot of TPS loss, and after some debugging & Citizens Discord support messages, it seems that item frames with maps are constantly sending map updates to NPCs (about 40 of them), causing major TPS loss on the server. By removing Citizens from the server, the lag disappears completely.

[fullwall]

Fixed in 1.18 but trickier to work around in previous versions. Needs a bit more thought.