Hello Sephi,
thank you for taking a look.
Yeah, it seems I messed up somewhere in the installation last time.(it's been a long time since I last installed the mod haha)
Did exactly what you said and started a new campaign.
Attached here are 2 savefiles with the BUG that skyrockets the AI income and as I noticed culture. Maybe something else is also affected
Faeryl Viconia save - you can clearly see the absurd amount of income for the Svaltarfar. I also suggest checking their capital which jumped to 600k culture in 1 turn
MoM save - a turn where you can see the negative culture of their capital, which will then jump to 600k (for reference, my capital with Sylvan lyre had like 30k or something)
Unfortunately, I don't have earlier save files as autosave were deleted when I tried testing different scenarios to see which of them work.
I never knew that somehow it straight-up deletes ALL the previous autosaves? I always thought it rewrites them or something. Didn't even pass the turn
That's kinda unfortunate.... I think we could have got an otherwise pre-bug savefile