@GrumpyKitten4295 I don't think BlueStacks would have anything to do with the Sims 4 issues, and almost certainly not with the dxdiag crash, but it's easy enough to kill it in the Task Manager before trying to play. Your dxdiag didn't crash this time though.
As for your driver version, the dxdiag is still reporting that you have 456.71, dated 9/29, installed:
Driver File Version: 27.21.0014.5671 (English)
Driver Version: 27.21.14.5671
DDI Version: 12
Feature Levels: 12_1,12_0,11_1,11_0,10_1,10_0,9_3,9_2,9_1
Driver Model: WDDM 2.7
Hardware Scheduling: Supported:True Enabled:False
Graphics Preemption: Pixel
Compute Preemption: Dispatch
Miracast: Not Supported by Graphics driver
Detachable GPU: No
Hybrid Graphics GPU: Not Supported
Power P-states: Not Supported
Virtualization: Paravirtualization
Block List: No Blocks
Catalog Attributes: Universal:False Declarative:True
Driver Attributes: Final Retail
Driver Date/Size: 9/29/2020 6:00:00 PM, 1039376 bytes
However, I went over the driver components in the dxdiag, and all except for two have a December date. (This was not true for your previous dxdiag, where the components were dated October 1.) The two still dated 10/1 are a .dll for the Nvidia Control Panel and a license file, so it does seem like this is just an error of reporting. Still, it's worth installing the newest driver, dated yesterday:
https://www.nvidia.com/Download/driverResults.aspx/168778/en-us
Run it as an admin: right-click on the download and select "Run as administrator." If you have a third-party antivirus, disable any real-time scanning before installing.
By the way, I was asking where you got the driver because most manufacturers and most assemblers provide drivers for their products for at least a little while. However, they don't usually post every single new driver, more like one every few months or for each new Windows 10 build or when there's an identified issue with the last driver they offered. Point is, Cyberpower might have an older driver on its website, but there's no reason for you not to download straight from Nvidia instead.
I still think it's worth installing the newest driver not only because of the discrepancy but because there are at least a couple new errors in your dxdiag that most often point to a driver issue. If that doesn't help though, please set the game to launch in windowed mode. Open your Origin game library, right-click on the Sims 4 icon, select Game Properties > Advanced Launch Options, enter -w (with the hyphen) in the command line box, and save.
If that doesn't help, please undo that setting. Then load the game to the Main Menu, open the graphics settings, and change the in-game resolution to something lower than 1768x992 on both dimensions. (At the very least, 1024x768 and 1366x768 should be available.) Please try in both fullscreen and windowed modes and let me know whether either one works.
While testing, please only start new saves, just to keep things simple. If you have your old saves available, you can try adding them back later, once the game is working again.