First of all, the command "player.pushactoraway 14 1" is not fixing the issue for me, so that solution does not seem to work.
Second of all, Immersive Beds is a LE mod, is there any way to do this fix for SE?
You could try altering the Game Setting "fMoveSwimMult" when playing as an argonian instead, as that only applies while swimming by default.
Page for the function that alters Game Settings here.
Full list of Game Settings here.