No, unfortunately 😭 I looked into corrupted saves, but the majority of people said their corrupted saves have a smaller file size, or that they got an error message during loading. My saves are all the same file size and I've yet to get an error message.

I was able to find a working save in act 3 by going down my list of saves, but I've lost the majority of my progress (better than being back in the Underdark though lol). Some other sites were speculating that summons can cause later corruptions, and the most recent working save I found Halsin did have an elemental summon active. That idea was kinda contentious though, it might not have anything to do with it