EA has quietly been testing a hidden performance feature in The Sims 4 called memory boost mode, and while it has not been officially announced, early testing shows it could fix long-standing issues and improve overall gameplay.
What is memory boost mode in The Sims 4?
Dataminer Anadius first discovered two new executable files inside the game: TS4 x64 FPV.exe and a related DLL file. These hinted at a new performance option designed to run on DirectX11.
Community testing has since revealed that memory boost mode:
- Frees up system memory
- Reduces lag
- Improves frame rates
- Helps prevent crashes
Additionally, saves made while using the mode are labeled as memory boost saves, making it clear when the feature is active.
Neighboring houses bug finally fixed
One of the biggest wins from early testing is the fix for the neighboring houses bug. This issue caused houses in the distance to appear empty or reset to default, something players especially noticed in For Rent apartments. Thanks to the hidden launch command tied to memory boost mode, this bug no longer appears.
While this is a small step, it is a meaningful one given how long players have been waiting for improvements.
How to enable memory boost mode now
Although EA has not rolled it out officially, you can already test it by adding a launch command:
- Open the EA App or Steam.
- Go to Manage settings for The Sims 4.
- Under Advanced launch options, type in:
-fb
This forces the game to run with memory boost mode. Keep in mind that:
- It only works with DirectX11.
- Switching between modes could affect save compatibility.
- Visuals may look slightly different, with some players noticing more jagged edges.
Why EA might be adding this now
Players with high-end systems may not see a huge change, but those with lower specs or frequent crash issues are expected to benefit most. Considering the game is now 10 years old with dozens of expansions, packs, and mods available, ensuring smooth performance is the bare minimum EA should provide.
It is also possible this feature signals a bigger shift:
- A full move away from DirectX9 in favor of DirectX11.
- Updated minimum and recommended system requirements.
- More bug fixes bundled into upcoming patches.
Community reactions
Some players are reporting smoother gameplay, while others like Sims Community readers have noticed specific fixes like the improved handling of background lots. Others point out that the real test will be if EA addresses save corruption issues, one of the most frustrating bugs still in the game.
FAQ about The Sims 4 memory boost mode
What is memory boost mode?
A hidden performance feature that reduces lag and improves stability.
How can I enable memory boost mode?
Add -fb under advanced launch options in EA App or Steam.
Does it work on DirectX9?
No, it only works with DirectX11.
What problems does it fix?
It frees up memory, improves frame rates, prevents some crashes, and even fixes the neighboring houses bug.
Will it change system requirements?
Possibly. EA may adjust requirements if they phase out DirectX9.
