I have not had any other reports of the game crashing and I can't find any issue on my end so it seems like you may be right in guessing that there is something your system does not like. I assume it is an issue with Windows 11. The only thing I can think of to suggest is to uninstall completely, delete all Windstone files and then reinstall the itch app and make sure to only download Windstone with the app. Downloading the files and trying to run them without the app has caused many issues with playtesters in the past, but downloading and installing the game with the itch app always solved their problem because the itch app automatically installs extra required files that are not in the direct download.