@kakashio91 I've split your posts into their own thread so I can better keep track of your specific information, and also in case I end up asking for a second opinion. I do want to mention that since this is a new computer, it might be easier for you to install a fresh copy of Windows rather than trying everything else I can think of to address this issue. This should be fixable, but it's possible that it's not without a fresh Windows install. More to the point, it would take less time to reinstall the OS than to do everything below, and if you have little data to back up and few apps to reinstall, the fresh install may be the better answer for you on balance. It's your call.
For the piecemeal route, try manually uninstalling and reinstalling both of your laptop's graphics drivers, as described here:
https://crinrict.com/blog/2019/02/clean-re-install-of-graphics-drivers-with-display-driver-uninstaller-ddu.html
Use the newest drivers provided by Intel; you can update the Nvidia driver later if you want. Grab the driver for the RTX 3050 (either listing; they're the same version) and the Intel UMA driver here:
https://www.acer.com/us-en/support/product-support/Nitro%20AN515-57/downloads
The proper order of operations is uninstall the Nvidia driver > uninstall the Intel driver > restart > reinstall the Intel driver > restart > reinstall the Nvidia driver > restart, all while offline. Then go back online and try to play.
If that doesn't help, try playing in a clean boot:
https://support.microsoft.com/en-us/topic/how-to-perform-a-clean-boot-in-windows-da2f9573-6eec-00ad-2f8a-a97a1807f3dd
The one service to leave enabled is the EABackgroundService, which the EA App needs in order to run. Disable the rest as described.
When you reboot your computer, go through the Task Manager's background processes list shutting down any service that doesn't absolutely need to be running, for example anything from MSI Afterburner to RGB software might still be enabled. If you accidentally kill a critical process and it doesn't restart on its own, just reboot your computer again.
Don't open anything other than Sims 3 and the EA App while testing, not even a browser window.
If that doesn't help either, I'd suggest doing a clean uninstall and reinstall of Sims 3 and the EA App. Use Revo Uninstaller (the free version is fine) to remove both. If you use a third-party antivirus, disable it (temporarily) before reinstalling the App, and don't reenable it until you've tested Sims 3 once. As long as you don't do anything else at the same time, your computer should be safe.