I finally reinstalled last night (both the game and my drivers) and the exact issue is persisting. I've noticed that mine almost exclusively happens in the Gold Saucer if a GATE is currently up, which makes me wonder if somehow certain NPCs are causing the issue? If I wait for the GATE to despawn I can load the GS just fine. Another notable time I crashed was on my way to Odin, loading into the Shroud to fight him. By the time I managed to relaunch the game he was already killed and I loaded in just fine. Unsure if NPCs could cause an issue like this, but it's just my experiences and I figured I would add this information.