Graphics Settings Fail to Save (NOT Duplicate)

I've mentioned this a few times in the past in other similar bug report threads, but those weren't the exact same issue, so I'm making a new separate one for this. The other launch resolution bug people have experienced and reported happens when you press "Start" on the main menu, while the bug I'm reporting here happens as soon as you first open the game through Steam.

Explanation of the bug and steps taken to reproduce it:

1. Launch the game through Steam.
2. The anti-cheat splash image appears.
3. Once that's done loading and disappears the game begins to open, except it shows as a black window in a small resolution.
4. Then the game forcefully tries to switch to exclusive fullscreen at whatever tiny resolution it's using, shifting around my whole desktop and other opened windows/programs.
5. After about 2 seconds it switches back to the correct screen mode (like borderless) and resolution that I have selected in-game.

This used to only happen occasionally, maybe 1 out of every 3 times I launch the game. This got much worse about a month ago when it was announced the other launch resolution bug was fixed, now I deal with this bug every single time I launch the game.

Additionally I've recorded the bug so you can see what this looks like on my end, I had to record using my phone since OBS doesn't record it properly as it switches resolutions: https://youtu.be/qlGQxSIvp6k

I've tried setting the game to windowed, exclusive fullscreen, borderless, different Windows display scalings, as well as deleting the config files and these two potential fixes from the other resolution bug, but none of them have helped at all. The game always attempts to launch at exclusive fullscreen + a very low resolution.