During playing the game there was runtime when I tried to leave Shadow Thiefs' building and game crashed for the first time since I began playing. And after that loading time(only saves, loading times between areas is quick) has increased to 10-15 min:speech:. I've reinstall the game - no changes. So I think save was somehow corrupted. I have installed fixpack and tweaks(only cosmetic changes) recently.
I thought you would be able to edit your save game. so it wasnt currupted anymore but if that doesnt work with shadow keeper then i dont know. I dont have the program so i dont know. sorry i couldnt help.