you have to read what is written in the dosbox.conf file:
# cycles: Amount of instructions DOSBox tries to emulate each millisecond. Setting this value too high results in sound dropo […]
Show full quote
# cycles: Amount of instructions DOSBox tries to emulate each millisecond. Setting this value too high results in sound dropouts and lags. Cycles can be set in 3 ways:
# 'auto' tries to guess what a game needs.
# It usually works, but can fail for certain games.
# 'fixed #number' will set a fixed amount of cycles. This is what you usually need if 'auto' fails.
# (Example: fixed 4000)
# 'max' will allocate as much cycles as your computer is able to handle
sometimes, stuff gets changed because it makes more sens this way to the devs. But if it gets changed the commands are either documented in the readme or the dosbox.conf (or both 😀).
So next time, if something won't work anymore, look at those two (and generating a new dosbox.conf is highly recommended when you switch versions of Dosbox)