THis might not work perfectly but at lest it whil fix the game for most people the sund isue is still present but not that detremental to gemplay.
Open the config.ini file
By defualt its set to variable.
Im suprized that capcom evn thou avare fo the problems variable framrate whas giving didnt set it to fxed by defualt and didnt even give plyers an option to change it manualy in game.
ALO IM AVERE MY ENGLISH SUCKS YOU DOTN HAVE TO POINT IT OUT.