@ladyboxx Thanks for doing all that testing and for providing the dxdiag, which makes things a lot easier for me. For future reference, it's always best to run DISM before sfc because the latter draws on info that the former verifies as intact. A clean bill of health from sfc doesn't necessarily mean anything without DISM restoring first.
Windows doesn't always respect the choice of graphics card set in the Nvidia Control Panel. So please force Windows to use your 3070. Hit Windows key-i, select System > Display > Graphics settings, click Browse, find TS4_x64.exe on the list, choose the high-performance option, and save. Then test.
Please also make sure the EA app in-game overlay is still disabled—your dxdiag shows the overlay crashing repeatedly and recently. If it is disabled, please uninstall the EA App with Revo Uninstaller (the free version is fine), and download a fresh copy of the installer to use. Restart after installing, then disable the overlay and all notifications within the App.
The EA in-game overlay is disabled same with notifications, and the Nvidia Control Panel and Windows display settings is already set to high performance nvidia for the sims 4
edit: I have followed your instructions with uninstalling the EA App with Revo, reinstalling, restarting, and disabling notifications and the ingame overlay. The Sims 4 is launching and loading, but I don't consider that to mean much of anything, because yesterday after I reinstalled the latest graphics drivers a second time trying to fix this issue the Sims 4 launched successfully 3 times in a row and I was able to play, before the error came back again shortly after. I don't know what is going on because rarely it will launch and run fine, sometimes it throws this error, and sometimes it launches but freezes on the loading screen.
edit 2: As I suspected, the error is back. I don't think I can even fix what is wrong anymore.
@ladyboxx When the error reappeared the most recent time, had you added mods or custom content back to the user folder? If so, does it help to remove them?
Please also let me know what antivirus you use and whether it helps to set exceptions for Sims 4 and the EA App. You may need to remove the Electronic Arts folder from Documents and (temporarily) start over after setting the exceptions: sometimes an antivirus has changed permissions on a folder and won't revert the settings just because you've now exempted whatever it was flagging in the first place.
There were no mods in my game folder in the most recent time, no. There have also been previous times in the last few days where the error has happened with a brand new Sims 4 folder and no mods. I use the default Windows microsoft defender antivirus since I can't afford any of the good paid ones, but it has never given me any virus warnings and I only download mods from tumblr, patreon or tsr. Hadn't even downloaded any new cc in weeks when this error randomly began.
I'll try setting EA and the sims 4 as exceptions with that tmr and generating a new electronic arts folder and see how it goes, I don't understand why the windows antivirus would randomly change permissions on those folders though if it even did
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