Minecraft version
1.18.2

Mod version
2.2

Describe the bug
This mod causes severe lag on the server, making TPS drops to less than 10. The Spark profiler shows that the WitherSicknessEvent is the main cause of lag. However, the lag only appears after installing the Ice and Fire mod, and can't be removed by uninstalling the Ice and Fire mod.

To Reproduce
Steps to reproduce the behavior:

1. Run a server with this mod and the Ice and Fire mod installed
2. Join this server
3. The server starts to experience severe lag

Crash Reports / Logs

• Spark profile: https://spark.lucko.me/780ea82Jdg
• Crash report when the watchdog forcibly stops the server: https://pastebin.com/Ff7cJJNc

Is OptiFine installed?
No

Screenshots
N/A

Performance improvements involving the wither sickness have been made in 1.19.3+ and will just need to be backported to the 1.18 version