Sims 4 Simulation Lag Fix: A Comprehensive Guide

This post has been Last Updated 2 months ago by Kunal

So this is the exact tutorial that you need for simulation lag fix sims 4 or in any version of Sims 3, sims 2.

Quick Summary

  • Simulation lag is a common problem in Sims 4 that causes Sims to behave strangely and the game to run slowly.
  • There are a number of things you can do to fix simulation lag, including lowering your graphics settings, disabling unnecessary features, limiting the number of Sims in your household, and installing the Simulation Lag Fix mod.
  • You can also try troubleshooting specific simulation lag issues by following the tips in the troubleshooting section of this article.

Simulation lag is a common problem in Sims 4 that causes Sims to behave strangely and the game to run slowly. Symptoms of simulation lag include Sims standing in place, walking erratically, and interacting with objects abnormally. The game may also freeze or crash.

What is simulation lag?

A screenshot of a reddit post complaining about simulation lag in Sims 4

When your game can’t keep up with what’s happening in the simulation, that’s when you get simulation lag. This can happen for lots of reasons like having too many Sims, really complex lots, or mods that are old or not working right.

What are the symptoms of simulation lag in Sims 4?

Common symptoms of simulation lag in Sims 4 include:

  • Sims standing in place
  • Sims walking erratically
  • Sims interacting with objects abnormally
  • The game freezing or crashing
  • Long loading times
  • Sims taking a long time to perform actions

Why does simulation lag happen?

Simulation lag can happen for a number of reasons, including:

  • A large number of Sims in a household or world
  • Complex lots with a lot of objects
  • Outdated or broken mods and custom content
  • A slow computer
  • Insufficient RAM or hard drive space

How can you prevent simulation lag?

There are a number of things you can do to prevent simulation lag, including:

  • Limit the number of Sims in your household.
  • Avoid building complex lots with a lot of objects.
  • Keep your mods and custom content up to date.
  • Upgrade your computer if possible.
  • Make sure you have enough RAM and hard drive space.

9 Ways Fixing Simulation Lag in Sims 4

If you are experiencing simulation lag, there are a number of things you can do to fix it.

Fix 1: In-game settings

The first thing you should try is lowering your graphics settings. You can also disable unnecessary features, such as uncompressed Sim textures and post-processing effects. Reducing the size of your world and limiting the number of Sims in your household can also help to reduce simulation lag.

Fix 2: Mods and custom content

reddit thread on TurboDriver makes a simulation lag fix mod

If you use mods and custom content, try disabling them one by one to see if that fixes the problem. You can also try installing the Simulation Lag Fix mod.

If you’re playing The Sims 4 and experiencing slow gameplay, don’t worry, you’re not alone. There are some mods that can help you speed things up. SrslySims and Coolspear have made some mods that target simulation lag, which work great with TurboDriver’s mod. But, having too much custom content can also slow down the game. So, you might want to go through your custom content folder and remove some of the larger files to speed up the game.

Fix 3: Simulation Unclogged

reddit a user explaing how to fix lag using turbodriver on simulation on sims 4

The initial mod mentioned is “Simulation Unclogger” by TurboDriver, which helps prevent the game from freezing and crashing but doesn’t entirely fix simulation lag.

Fix 4: Backup and Remove Old Saves

Backing up your saves and removing old saves from your game folder might improve performance. Sometimes, old saves can cause issues.

reddit thread: Two factors that can affect lag in video games: a bloated library and old saves.

So this is the technique that I am possibly trying for the game lags, and it actually works out most of the time, so if you are facing the simulation lag in Sims 4 or Sims 3 you can try this. 

Fix 5: Library and Tray Folder

The Library is where your saved builds are stored locally, and the Tray folder contains items from the Gallery. Removing unnecessary items from these folders might help with lag.

Fix 6: Try Playing Without Mods

To diagnose if mods are causing the issue, you can temporarily play the game without any mods. This can help determine if mods are contributing to the lag.

If you are using modes in the simulation and Sims 3 or in Sims 4 then definitely you should try not using it once if you figure out that by not using it you can reduce the lag in the game then that’s an advantage. 

Fix 7: Autonomy and Inventory

Turning off autonomy for Sims and ensuring inventories are not overly cluttered can reduce lag.

Fix 8: Single-Core CPU Issue

Some players mentioned that The Sims 4 utilizes a single core of a multi-core CPU, potentially causing performance issues.

Fix 9: Xbox Lag

If you’re experiencing lag on Xbox, there may not be as much you can do in terms of mods. Ensure your console is updated, and you might want to consider limiting the number of Sims and households in your game.

Other tips for simulation lag fix sims 4

Here are some other tips for fixing simulation lag:

  • Keep your game and graphics drivers up to date.
  • Close any unnecessary programs running in the background.
  • Defragment your hard drive.


If you are still experiencing simulation lag after trying the above tips, you can try troubleshooting specific simulation lag issues by following the tips in the troubleshooting section of this article.

sims 4 simulation lag fix overlay text with screenshot lagging


This article has provided a comprehensive guide to fixing simulation lag in Sims 4. By following the tips in this article, you can reduce or eliminate simulation lag and improve your overall gaming experience.

So when I personally tried all these steps and even one of my gaming friend who does live I told him to try these things on his console and what I figured out was that it reduces lag by 30 to 45% and can improve your gaming efficiency by 10 to 20%s, so it works out for those who follow these tutorials completely suppose I have given fix 1 to fix 9 if someone just tries these things on their device either it’s a PC or Xbox it would work.1

Resources for further information

Here are some resources for further information on simulation lag and how to fix it:

  • The Sims 4 official website:
  • The Sims 4 Community Forums:
  • SimsWiki:
Kunal Kashyap, the tech guru behind, simplifies complex tech issues with clear and user-friendly guides. With expertise in Android, iOS, and more, his tutorials empower users to tackle tech problems confidently. Kunal's engaging style makes technology accessible to both beginners and experts. Beyond tech, he explores psychology and keeps up with tech and business trends awarded by the Government and Namita Thapar.

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