[PROBLEM] Randomly missing audio (HDMI) - VCHI service conn error

[challenge]

Hello, I get a few seconds of missing audio while playing.
It happens sometimes one time per hour, sometimes multiple, sometimes never...

Moode 7.6.1 - RPi4 - CamillaDSP on (6ch in use) - HDMI out - Suptronics x6000 7.1 board (hdmi input not HAT, self powered)


Sound stops for like 10 seconds then it resumes. WebUI slow/unaccessible when it happens. 
Not sure if it happens between songs or randomly.
I am not using it daily. And don't remember if it happened in past. Today I updated from 7.4.x to 7.6.1 and I realized about it.

Not asking for a solution but what could it be? kernel bug?

I checked the logs and this shows up when it happens.

Code:

Jan  9 13:39:43 moode kernel: [  490.337605] bcm2835_audio bcm2835_audio: failed to close VCHI service connection (status=1)
Jan  9 13:56:08 moode kernel: [ 1474.965026] bcm2835_audio bcm2835_audio: failed to close VCHI service connection (status=1)
Jan  9 14:26:32 moode kernel: [ 3299.097855] bcm2835_audio bcm2835_audio: failed to close VCHI service connection (status=1)
Jan  9 14:36:39 moode kernel: [ 3905.743514] bcm2835_audio bcm2835_audio: failed to close VCHI service connection (status=1)
Jan  9 15:07:24 moode kernel: [ 5751.362990] bcm2835_audio bcm2835_audio: failed to close VCHI service connection (status=1)
Jan  9 15:19:27 moode kernel: [ 6473.695209] bcm2835_audio bcm2835_audio: failed to close VCHI service connection (status=1)

kern and moode logs attached as they were too long for a message.

BR