Cheers -- that's a very strange issue, not sure why it would go way up unless you're copying the settings files between computers? Which is fine if you do, that's a great way to play on multiple computers; but I'm hoping it's not some other sort of strange bug is my point.
Anyway, if you go into the game install folder, and then go into the RuntimeData subfolder, there is a settings.dat file. You can open that up in notepad or any other text editor, and there are some lines in there with the specific entries. Note that there are different sizes you can set for both windowed and fullscreen resolution, so make sure you hit both just in case.
Hope that helps, and thanks for the kind words!