Steam Community :: Guide :: Permanently Fixing Lag/Desync/Slowdown Issues in Multiplayer! (Works With Calamity/Infernum)

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95 ratings

Permanently Fixing Lag/Desync/Slowdown Issues in Multiplayer! (Works With Calamity/Infernum)

By oliver

This pretty much makes it so you can play infernum/normal calamity in multiplayer, Flawlessly .

Award

Created by

oliver
Offline

Category: Co-op, Modding or Configuration, Multiplayer

Posted

Updated

25 Jan, 2023 @ 9:55pm

10 Jan @ 12:18am

23,421	Unique Visitors
172	Current Favorites

Guide Index

Overview

Fixing The Problem

For Players Still Having Isssues

FAQ

Desync not your problem?

Comments

Fixing The Problem

1. First go to “Documents > My Games > Terraria” and look for the “config.json” file
2. Inside config file look for “MultiplayerNPCSmoothness” and set it to 0 (make sure to keep the comma at the end)
3. Then go to “Documents > My Games > Terraria > tModLoader” and find the config.json file
4. Same as before, look for “MultiplayerNPCSmoothingRange” and set it to 0
5. Restart your tmod
6. Host your world
Lag is (probably) gone!

For Players Still Having Isssues

- host your world via cmd in the tmod folder
- get better internet
- use retro or trippy lighting
- quality low
- disable the background
- disable afterimages and lower particles on the Calamity configs
- get the Optimizeraria resource pack
- get a mod that changes the lighting engine (not guaranteed to work, might worsen it)
- use fewer mods (esp beefy ones, Cal is beefy already)

FAQ

Q: The config.json file keeps setting "MultiplayerNPCSmoothingRange" back to 300?
A: Set the file/files to read only

Q: It doesn't work
A: Please check "For Players Still Having Issues" and do EVERYTHING it says to do. It problems still persist, then write me something in the comments

Desync not your problem?

If Low FPS in multiplayer or singleplayer seems to be the error, I've created a guide on how to permanently solve this issue. (Click here to view!).

53 Comments

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konstantinos21 15 Jul @ 1:55pm

for anyone still having problems for me it wasnt fullscreen for some reason. when i made it fullscreen it was fine

slumgum 4 Apr @ 2:15pm

thanks bah, this helped so much that my lag's still the same

real(fake) 5 Feb @ 7:18pm

I don't have a "MultiplayerNPCSmoothness". The file only contains "MultiplayerNPCSmoothingRange".

Professor Pack 18 Jan @ 1:57pm

FOR EVERYONE STRUGGLING WITH THE CONFIG RESETTING, I MADE A GUIDE WITH AN ACTUAL PERMANENT FIX:
Here

Willow 16 Dec, 2024 @ 10:12pm

It genuinely will always reset itself, Im using the cmd in the local file, and no matter what i try (read only, steam cloud off, restarting computer, reinstalling tmod) it genuinely resets itself as the server starts without fail

Nandi 10 Dec, 2024 @ 8:24am

Tmodloader mulitplayer noc smoothness keeps resetting even after putting the file to read only.

徐 8 Dec, 2024 @ 8:00am

confirmed that this does not work after trying everything

Twright44 30 Nov, 2024 @ 12:19pm

my game only lags when i use the terraformer in multiplayer

level 2 ves 3 Nov, 2024 @ 5:20pm

my config is resetting regardless of 'read-only', any ideas?

Asmodeus 21 Oct, 2024 @ 7:12pm

Not sure why but i don't have a terraria folder in documents only the tmodloader one so i can only change smoothing range

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