Holy shit, Larian.
I haven't launched the game since my original post (see above) and since then there have been a couple of updates/patches that I installed. I launched the game today and it took 12 minutes and 35 seconds for the game to load past the initial loading screen.
What is the problem with your game?
I'm running a 5900X, 32GB RAM, Windows 10 (installed on it's own SSD), 3080Ti and BG3 is installed on a different SSD than the OS is.
OS is fully updated and I'm on GPU driver 537.42 (which was released 9/21/23. I updated to this driver when the game started having issues loading to the main menu and it didn't help so I haven't bothered to update it to any else more recent).
It should not take nearly 13 minutes for this game to load to the main menu screen just because the game overlay option is enabled on Steam and/or GoG Galaxy.
Fix this.
While you're at it, fix your forums, too. So hard to get on here to post or even read posts due to the constant 504 timeouts.