I’ve just been trying this and found a way around it in my set up. I have Aux in from a PC. I started to notice this where a quiet scene was showing the sound cut out completely and when the dialogue or action started again you lose the first 1/4 second or so. You need to drop the sound level on the bar to 2 or three LEDs on the left. Increase the audio of whatever is playing. That could be the TV or PC. Make sure if PC that the particular video or film volume is up as well (to at least 75%). Then balance the sound level you want on the bar itself. Basically if the level hitting the bar is too low it will drop the audio completely. You need to make sure the source level is high or over 3/4 of the way up. Good luck