The Sims 4 Mods

The Sims 4: Simulation Lag Fix Mod has received an Update

A few years ago we wrote about the Simulation Lag Fix Mod which fixes many glitches in The Sims 4 related to response time. The mod was developed by simmythesim but for some reason the update stopped receiving updates along with The Sims 4 Patches for PC and Mac.

Luckily modder SrslySims decided to lift up the mod and make it fully functional for The Sims 4’s latest version.

The mod has been tested and is functioning properly with The Sims 4’s current version. You can get it by simply clicking the download button down below and extracting the contents to Electronic Arts > The Sims 4 > Mods folder. Considering that this is a script mod you’ll need to enable both Mods / CC and Script Mods in your game options in order to have this mod working.


About the author

Jovan Jovic

Founder of the Sims Community website. I do plenty of things around here including writing articles such as "Top 10 Disney Princesses in The Sims", social media management, video content creation, streaming and more!


  • The “updated” simulation lag mod 2019 doesn’t work. At least not for myself if anything it exacerbated the problem further removed from my save and even though the simulation lag is there its not as noticable as it was with the mod.

    Again if anything this is something the devs and lazy ass coders at EA and Maxis have to fix although 3years from release I doubt it’d happen, makes me wary of bothering buying or supporting Maxis again if the decide to release a 5th version of sims to be honest.

    • The Sims 4 doesn’t really lag, it’s a scheduling problem, which is caused by threading problems (poor CPU/memory performance during distributed processes) and/or silent exceptions, due to data errors and/or bad scripting, which cause the engine to wait for a cycle before scheduling the next interaction(s). Build a system with a high frequency CPU and quad channel memory, a high performance storage controller with striped serial SSDs or M.2, and install the package on a separate physical device and volume. You can also output interaction lists, and object states, when you see that your sims are idling, and you’ll notice that the majority of the delays are caused by routing failures – sim routed to null surface, invalid object state, multitasking inaccessible objects, bad tuning in package which causes silent cancellation of super interactions, etc…

      • I run my game on my Bf’s old (he has a new one now and gave this one to me) Alienware 8th Generation, Intel i9-8950 HK 6-Core / 512GB SSD+1TB with oc/5.0GHz NVIDIA GTX 1080, and it lags. In Process Hacker there are no threading issues, and it definitely has, from what I can tell, no problems with any other program in terms of “poor CPU/memory performance during distributed processes”. The game just sucks. Period. The cow has been milked long after they have technically put it out to pasture, and stopped caring for it. The mod and cc creators are the only ones keeping the poor thing alive.

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