While it is convenient to open the panel from inside Cubase you don’t need to do it this way.
Close Cubase, open the MOTU panel and see how your buffers are set/change as required then restart Cubase.
While it is convenient to open the panel from inside Cubase you don’t need to do it this way.
Close Cubase, open the MOTU panel and see how your buffers are set/change as required then restart Cubase.