I have the issue as well. I have tried any potential fix I could find online and nothing works. This is ridiculous! I can't play a game I paid for. Honestly, I am not willing buy Bannerlord when you are not even able to fix Warband. I know you use phrase "Unfortunately, we are unable to reproduce this issue in the office so we aren't entirely sure what is causing it..." but that is just an excuse. If you are serious in fixing it, contact me and you can get distant access to my computer to actually figure out what is happening. Good day!