I had the same problem until I realized there was an “upmix/surround” box at the bottom of each set of efffects equalizers in either basic or advanced mode on the “Sonic Stidio” application. Download it, if you havent already, turn on “sonic studio effects,”
and check the last box in each set of equalizers, “upmix/surround.” As long as everything else is aligned correctly, that should do the trick. Worked for me.
BASIC MODE