Whitescreen/CTD on Alt-Tab/Graphics Settings Change, after DLC Purchase.

I'm aware there's a topic that already covers Alt-Tab/Graphics settings changes leading to crashes, but the only suggested solution was to perform a clean-boot of your pc, which I'd done and unfortunately didn't have any results.

With that out of the way: I'd recently been playing The Sims 4 with the Get To Work, Pets, Realm of Magic, and Cool Kitchen Stuff, packs. The game would run, and I could freely alt-tab in and out of the game without issue. But recently, after acquiring the Seasons DLC, and the bundle of (City Living, Eating Out and Bowling) bundle, the game crashes if I alt-tab out of the game, and more pressingly, if I alter the games graphics settings. To try and remedy the situation, I'd attempted to change the Options.ini file to change the fullscreen value, but running in windowed lead to a CTD moments into launching.

Key Info/TL:DR;
- Game worked with the following DLC: Get to Work, Pets, Realm of Magic, Cool Kitchen Stuff
- Issue arose after aquisition of DLC: Seasons, City Living, Eating Out, Bowling Stuff

Steps taken to fix the issue
- Altering the Options.ini to make the game boot in borderless windowed.
- Clean system boot
- Disabling the packs via Launch Options
- Repairing game files via Origin Launcher
- Uninstalling and Reinstalling The Sims 4
- Scanned TS4 for Updates

Any and all help would be appreciated.