Game is running super slow since last update on Sims 4/March 2021

@signer126  Please try playing a new save in a clean user folder, for comparison.  Move your entire Sims 4 folder out of Documents\Electronic Arts and onto your desktop, and when you launch the game, a new folder will spawn with no content.  Don't add anything to it yet; just start a new save and let me know how it runs.

If the new save is fine, copy one of your existing saves from the old Sims 4 folder to the new one and see how it does.

If you see the same issues in the new save, please run a dxdiag and attach it to a post.

https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/

I'm having the same problem. Everything was working great but suddenly i can't play at all due to extreme lag. I reimaged my PC, updated the latest graphics driver and did a fresh install of the Sims 4 and its supper lag.

Need help please! 

@Elmwen  It looks as if the computer is updating which could effect performance. Also Windows does a ant-imalware scan in the back ground - this can and does effect performance. Check in settings - update and security

@Elmwen  What kind of lag exactly do you mean?  There are different kinds, with different causes.

For now, please run a couple of basic checks on your Windows system files:

• Hit Windows key-X
• Choose either “PowerShell (Administrator)” or “Command prompt (Administrator),” whichever option is offered
• Inside the window that appears, copy and paste “DISM.exe /Online /Cleanup-image /Restorehealth” without quotes into the window, and enter
• The system will start validating soon. If it throws an error, please list it here
• After it reaches 100%, hit Windows key-X again
• Again, choose “PowerShell (Administrator)” or “Command prompt (Administrator)”
• Inside the window, copy and paste “sfc /scannow” without quotes into the window, and enter
• Post the message you receive here

Restart your computer when you're done.  Then disable Game Mode and Game Bar, both of which can be found in Windows Settings > Gaming.  Let me know how the game runs after that.

 Ran the DISM clean up and the sfc verification, it did say it fixed some corrupted files. turned off game bar and game mode. tried the game again but its still laggy. Its jerky and slow during sim creation and during play. Ran all the windows updates as well so none were pending just in case but that had no effect either. 

@Elmwen  Please check how much of your CPU is being used while you play.  You can see the value in the Task Manager.  If it's high (at or close to 100%), restart your computer and try playing with Origin in offline mode.

If this isn't the issue or doesn't help, please move your entire Sims 4 folder out of Documents\Electronic Arts and onto your desktop.  When you launch the game a clean folder will spawn with no content.  Don't add anything to it yet; just see whether you have the same issue in a new save.

Highest performance shows on my HDD and Memory but they are still under 40%. I see multiple processes running under the Task manager details tab, I think that's normal right? 

I had deleted the sims folder earlier out of the documents folder but I moved it again, still a very laggy right from the start.

You know when you first run the game and the green sim diamond spins? On mine its all in super slow-mode...the loading screens are slow the creation screen slows...trying to click on any of the buttons inside the program is really slow. I open other games, they run fine. its so strange! 

@Elmwen  Yes, there will be a large number of processes running even before you open any applications.  The important question is whether anything uses too much of your computer's resources, which it sounds like isn't happening.

Please try playing offline anyway; that will help narrow things down to some extent.  Please also let me know what antivirus you use, and whether you use OneDrive.

Did you figure it out?

Me tooo but im on xbox its taking forever to load never had mods or anything im just gonna try to restart the internet and see if that’s the problem