Villager Optimizer Plus

https://www.spigotmc.org/resources/villager-optimiser-1-14-2-1-15.68517/
this plugin is a "fork" of this plugin that adds 2 commands to allow players to opt-out of the optimizations, by using the command /aavlp the chunk they are currently standing in will not be affected by the plugin past that point.

The list of protected chunks is saved and stored in the vanilla_chunks.yml as a list of longs when the server is turned off. There is more information in the README of my GitHub repo
https://github.com/Devan-Kerman/Anti-Villager-Lag-Plus/blob/master/README.md