The Sims 4 Memory Boost Mode Is Here, But What Exactly Does It Do?

Back in August, players noticed that a new executable called “TS4_x64_fpb.exe” was quietly added to the game’s bin file for players on Windows. Players quickly got to work investigating, with the feature turning out to be “Memory Boost” mode. Today, September 23rd 2025, Memory Boost Mode has been released in early access for Simmers on Windows, but what does it do? Let’s take a look at how to enable it and how it improves gameplay!

How To Enable Memory Boost Mode

For players on Windows, head to ‘Game Options’ and find the tab named ‘Other’. A new drop-down has been added next to “Memory Boost (Early Access)”. Click on the drop-down and select ‘Enable’. You will have to restart the game to access all that this mode has to offer.

What Does Memory Boost Mode Do?

To put it simply, Memory Boost Mode optimises memory usage by The Sims 4 on your PC. This can help reduce lag, reduce frame drops, and help avoid crashes when playing on a long-running save or with a cluttered lot. When recovering previous saves you there will be a Memory Boost label if it has been saved with the mode enabled. Here’s how to check:

• Go to your saves menu and hit the ‘Recover Save’ Icon.

• Beneath your save name, household, date, and time, you will see “Memory Boost”

What Notable Changes Are There?

The first thing I noticed after enabling Memory Boost was the reduction in load times, around 5 seconds when using the ‘Load Game’ menu, and 11 seconds when choosing ‘Resume Game’.

I wanted to test how good the reduction in lag really was, so I ran a few interactions that often cause lag. The first was the clock freezing when all Sims are asleep and the game is at super fast speed. I noticed no instances of the clock stopping randomly while my Sims slept over 3 nights.

I find that cluttered lots are a strain on my game, despite having a PC with specs well above the recommended. So I decided to test some very cluttered lots to see if my performance was affected. I chose a favourite lot of mine, ‘Hobbies Centre’ by Sims4Ideas on the Gallery. It only took around 20 seconds for the lot to place from the Gallery.

While on the lot, I experienced no lag or drop in frame rate, averaging around 40 fps.

The next test I decided to run was on a busy small business lot, as I often find myself running into glitches and issues because of the number of Sims there. I converted ‘South Square Coffee’ in Windenburg. I maintained a consistent 20fps with a full business running.

Build mode can often cause lag, and has been doing so for many years. However, with the memory boost on, I had around 60fps at all times!

What’s Next?

The Sims 4 has a long history of performance issues; however, it has a long history of improving compatibility as hardware progresses. The DirectX 11 update saw massive improvements for Simmers running DirectX 11. Once the issues have been ironed out and any bugs quashed, the Memory Boost mode will likely become the standard for The Sims 4 going forward. If you are running into any issues with the Memory Boost mode, make sure to report them on the Memory Boost Technical Issues and Feedback Thread on the EA Forums.

Have you tried Memory Boost mode yet? Let us know in the comments below, and stay tuned to Sims Community for all the latest on The Sims 4 !