Arcade64 .225 / Video Settings Reset?
See here for a precise order for ini loading: https://docs.mamedev.org/advanced/multiconfig.html
There is a gamename.ini in the INI folder for the game name. There is also a vecter.ini under the presets folder & you may have
another under the source folder if you created one for that source tree(i.e. starwars.ini or tempest.ini - Those 2 just happen to have
the same names as the source...) It could be in any one of those that you made your mistake or if the doesn't fix it, there could be
another hidden somewhere else-see loading order from above.
GL!