How can I output sound from 15" 2016MBP to dual LG UltraFine 5K Displays and still control volume from keyboard?

Sound works with first display. To add second display required sound flower multichannel which disabled the volume controls from laptop (the monitors do not have any controls so this is a problem). Was able to get this to work by also running SoundflowerBed but this produced noticable tics and pops in audio on occasion. Anyone get this to work another way?

LG UltraFine 5K Display

LG UltraFine 5K Display

Product No Longer Available

No Answers have been submitted