@Queenc2789 First of all, please disable the Alienware Command Center, or uninstall it if you have no particular use for it. You can always reinstall it later (it's a free download on the Dell service page for your laptop), but right now, it's crashing over and over, so much so that it's crowded out most other errors in your dxdiag. If you don't uninstall it, make sure none of its processes are running in the Task Manager, including in the background processes list; you can just kill anything with Alienware in the name.
The screenshot of the Task Manager shows that something on your system is eating RAM: almost 6 GB is going to apps other than Sims 4. Windows should only use 2-3 GB, so the question is what else is using a lot of resources. The quickest test is to restart your computer, open the Task Manager, but nothing else, and check the overall Memory use. Please let me know what percentage you see in use.
If that percentage is above 40, please open the Startup tab and post a screenshot of the contents. I'd like to see what might be running at startup that you could disable. The apps would still open as normal when you wanted to use them; the point would be to keep them from running on their own when you don't need them and would rather have more resources available for Sims 4.
If you'd prefer, you can disable the apps you don't need starting with Windows, then restart your computer again and see whether memory use has dropped to an acceptable level. If it's below 40%, try again to play Sims 4 and let me know how it goes. If you still get lag, check memory use in the Task Manager again. You don't need to post a screenshot; just let me know what percentage you see in use while the game is lagging.
While you're testing, please use the new save, or another new one, rather than your existing one, and don't open anything other than the EA App, Sims 4, and the Task Manager.
