Picade X - poor sound quality

Hi, I’ve recently built the 10" Picade with the Picade X HAT. After a few hiccups in trying to configure it without a USB keyboard (I used the command line via SSH) I have a working system with one major problem: the sound quality is extremely poor.

For example, launching Defender has a constant scratching buzz. Other games such as Ms Pac Man have sounds delayed and voices out of sync with each other. Even moving up and down the list of games has a delay to the clicking sound.

I’m running the latest Retropie image as of yesterday.

Would anyone be able to advise me on where to start looking to debug this issue?

Thank you.

One thing I notice is “VolumeControl::init() - Failed to find mixer elements!” and then a ton of “ALSA lib:pcm.c 8424:(snd_pcm_recover) underrun occurred” messages when I launch anything that shows the text mode screen. Is this somehow related?

Just figured out the sound issue… I had to do a “sudo apt remove pulseaudio” because it was interfering with the mixer. Now I have clear sound. I hope this helps someone.