why is the sims 4 game being so slow?

@abc1381541026  Yes, that's what I wanted, thanks.  Your dxdiag is missing a lot of information though, because it crashed while running.  Between that and the system errors at the end, it's a good idea to run a couple of checks on your Windows system files.  Here's how:

• 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, and manually run any pending Windows updates.  Hit Windows key-i, select Update & Security, and click the button to check for updates.  If you have a number of them pending, it may take a few tries, with restarts in between, to get them all to run.

Please also disable Game Bar.  Hit Windows key-i, select Settings > Gaming > Game Bar, and turn it off (the first option at the top).

Restart again, test the game, and let me know whether it still runs as slowly as before.  If it does, please run another dxdiag.

Just so you know, with only 4 GB memory, your laptop is always going to run the game more slowly than it would with more memory installed, and probably more slowly than it did when you had fewer packs installed.  That's unavoidable to a certain extent.  But there are still steps you can take to help, such as not running any other apps while you play and restarting the game before launching, to free up as much RAM as possible.