i was also experiencing sound crackle and clicks under 32 bit high setting, when i reduced the bit rate load this cleared up as well, the sim still sounds great in 16 bit audio.
does sound more tight the sounds in 32 bit. but i was surprised to see slight frame gain.
I noticed that my sound card was on high setting so, reduced to 16 bit audio, was surprised how much smoother DCS is online now.
worked for me, thought i would share the love.