Loading of new chunks is unusually slow

[creeper-0910]

Expected behavior

New chunks should take a few seconds or so to load.

Observed/Actual behavior

If you go to a chunk of the overworld that has never been read in the nethergate, an error is logged in the console and it takes about 2 minutes to load the chunk.

Steps/models to reproduce

Stacktrace: https://pastebin.com/WbpgU2Kn 1.A nether gate is placed about 1000 blocks away to generate a new chunk of the overworld.

Plugin and Datapack List

Plugin
	AllowToConnect v1.0.0
	CoreProtect v21.3
	CustomWelcome v1.4
	HiddenArmor v1.1.0
	Geyser-Spigot v2.1.1-SNAPSHOT
	floodgate v2.2.2-SNAPSHOT (b59-2278589)
	DiscordSRV v1.26.2
	LunaChat v3.0.16
	PlaceholderAPI v2.11.3
	ProtocolLib v5.0.0
	spark v1.10.41
	GSit v1.4.5

Paper version

This server is running Paper version git-Paper-8 (MC: 1.20) (Implementing API version 1.20-R0.1-SNAPSHOT) (Git: 3722877) You are running the latest version Previous version: git-Paper-4 (MC: 1.20)

Other

"THIS IS NOT A BUG OR A CRASH", but the problem happened after I updated to 1.20. I migrated this server from 1.19.4 and had no problems before the migration.