@IrisAlvarezRocas The new dxdiag shows another error related to the Nvidia graphics driver plus some generic Windows errors, so please run a couple of basic checks of your Windows system files:
- Hit Windows key-X
- Choose either “PowerShell (Administrator)” or “Windows Terminal (Administrator),” whichever option is offered
- Inside the window that appears, copy and paste “DISM.exe /Online /Cleanup-image /Checkhealth” without quotes, and enter
- When it's finished, post the message you see
- Hit Windows key-X again and choose “PowerShell (Administrator)” or “Windows Terminal (Administrator)”
- Inside the window, copy and paste “DISM.exe /Online /Cleanup-image /Restorehealth” without quotes, and enter
- The system will start validating soon. If it throws an error, please list it here
- Otherwise, after it reaches 100%, hit Windows key-X again and choose “PowerShell (Administrator)” or “Windows Terminal (Administrator)”
- Inside the window, copy and paste “sfc /scannow” without quotes, and enter
- Post the message you receive here
Restart your computer, hit Windows key-i, select Update & Security, and click the box to check for updates. If any install, restart again afterwards.
Try again to play, and if you see the same performance issues, please test a new save in a clean user folder. This is for comparison's sake; I'm not saying you need to get rid of your main save. Move the entire Sims 4 folder out of Documents > Electronic Arts and onto your desktop, and when you launch the game, a clean folder will spawn with no content. (Your saves and other content will be intact in the folder you moved but temporarily not read by the game.) Don't add anything to the new folder yet; just start a new save in one of the base game worlds and let me know how it runs.