I once join the limbo server, need wait 20 ~ 30 seconds

I can't reproduce. Try it with a vanilla client.

Upload settings.yml here.

vanila client. settings.yml is same. with fabric same

NanoLimbo configuration

Server's host address and port. Set ip empty to use public address

bind: ip: 'localhost' port: 65535

Max amount of players can join to server

Set -1 to make it infinite

maxPlayers: 100

Server's data in servers list

ping: description: '{"text": "&9NanoLimbo"}' version: 'NanoLimbo'

Available dimensions: OVERWORLD, NETHER, THE_END

dimension: THE_END

Whether to display the player in the player list

For 1.16.5 clients player list will be sent even if disabled, to avoid crash

playerList: enable: false username: 'NanoLimbo'

Whether to display header and footer in player list

headerAndFooter: enable: false header: '{"text": "&eWelcome!"}' footer: '{"text": "&9NanoLimbo"}'

Spawn position in the world

spawnPosition: x: 0.0 y: 400.0 z: 0.0 yaw: 0.0 pitch: 0.0

Setup player's game mode

0 - Survival

1 - Creative (hide HP and food bar)

2 - Adventure

3 - Spectator (hide all UI bars)

gameMode: 3

Server name which is shown under F3

brandName: enable: false content: 'NanoLimbo'

Message sends when player join to server

joinMessage: enable: false text: '{"text": "&eWelcome to the Limbo!"}'

BossBar displays when player join to server

Works on 1.9+ clients only

bossBar: enable: false text: '{"text": "Welcome to the Limbo!"}' health: 1.0

Available colors: PINK, BLUE, RED, GREEN, YELLOW, PURPLE, WHITE

color: PINK

Available divisions: SOLID, DASHES_6, DASHES_10, DASHES_12, DASHES_20

division: SOLID

Display title and subtitle

title: enable: false

Set title text value empty, if you need only subtitle

title: '{"text": "&9&lWelcome!"}'

Set subtitle text value empty, if you need only title

subtitle: '{"text": "&6NanoLimbo"}'

Fade in time in ticks (1 sec = 20 ticks)

fadeIn: 10

Stay time in ticks

stay: 100

Fade out time in ticks

fadeOut: 10

Player info forwarding support.

Available types:

- NONE

- LEGACY

- MODERN

- BUNGEE_GUARD

Don't use secret if you not use MODERN type

infoForwarding: type: NONE secret: '<YOUR_SECRET_HERE>' tokens: - '<BUNGEE_GUARD_TOKEN>'

Read timeout for connections in milliseconds

readTimeout: 30000

Define log level. For production, I'd recommend to use level 2

Log levels:

0 - Display only errors

1 - Display errors, warnings

2 - Display errors, warnings, info

3 - Display errors, warnings, info, debug

debugLevel: 3

Warning! Do not touch params of this block, if you not completely sure what is this!

netty:

Use Linux native transport type, if it possible

useEpoll: true

EventLoopGroup threads count

threads: bossGroup: 1 workerGroup: 4