Ah, in case you're wondering, those changes switch it from AMD FSR to Nvidia DLSS, allowing it to use your actual card instead of your software/RAM for some important tasks.

It's strange this error has been happening regardless of the RAM change too.

If you're still using Windows 11, you could try running the game in compatibility mode with Windows 10. Personally, I haven't upgraded to 11, because I always feel that "if it ain't broke, don't fix it". If you find the executable in Program Files\Square Enix\ (ffxiv_dx11), you can permanently set its compatibility mode in its properties.