A Sims 4 character sits at a glowing computer in a modern home office, with digital icons floating around to represent improved speed and performance.
Reduce lag, prevent crashes, and enjoy smoother gameplay with the new Memory Boost Mode feature.


The September 18, 2025 update for The Sims 4 introduced Memory Boost Mode, a brand-new feature designed to improve how the game runs. For long-time players dealing with lag, stuttering, or even crashes, this update brings some much-needed relief.

What Is Memory Boost Mode?
Memory Boost Mode is an optional performance setting that optimizes how The Sims 4 uses memory (RAM). By doing so, it helps:
  • Reduce lag during gameplay
  • Improve frame rates
  • Lower the risk of memory-related crashes

It’s not automatically turned on—you’ll need to enable it in your game settings.

How to Enable Memory Boost

Turning it on is simple:
  1. From the main menu, open Game Options.
  2. Go to the Other tab.
  3. Under Memory Boost, select Enabled.
  4. Restart the game to apply changes.

You can switch it off again any time using the same steps. The feature first launched on PC/Windows, and later rolled out to PlayStation and Xbox in update 2.20.

How Saves Work with Memory Boost
When Memory Boost is enabled, recovery saves created during gameplay are clearly tagged so you’ll know they were made in that mode. At least one original (non-Memory Boost) recovery save is always kept as a fallback, just in case.

What Players Are Saying
Community feedback has been largely positive. Many players report smoother gameplay, faster loading times, and fewer crashes in long saves. On the flip side, results can vary depending on your system—some notice a big improvement, while others see only minor changes.

Should You Try It?
If your game often stutters, freezes, or crashes, Memory Boost Mode is worth enabling. Since it’s optional and reversible, you can easily test it and decide if it makes your gameplay experience better.

Final Thoughts
Whether you’re a longtime simmer with a massive save or just starting out, Memory Boost Mode is a welcome addition to The Sims 4. Since it’s completely optional, players can try it out without risk and decide if it improves their gameplay. For many, it’s already making life in the game feel smoother, faster, and more fun—just the way The Sims should be.

Try It for Yourself
Ready to see the difference? Head into your game settings and turn on Memory Boost Mode to find out how much smoother The Sims 4 can run. Whether it’s fewer crashes, faster loads, or simply less lag, this update could make your Sims’ world feel brand new again.