It could potentially be a Dolby issue, I remember Kodi had issues with high bitrate TrueHD/Atmos tracks for years that caused audio dropouts which is one of the main reasons I got a Zidoo over a Vero 4K at the time.
I watched Renfield yesterday which is HDR10 and again one single unrepeatable audio dropout. Same settings on my Lumagen as the Zidoo which has no dropouts with identical setup and both using the HDMI cables that came in the box so nothing fancy.
EDIT: Just went back to see which ones I had dropouts on before and which ones not, Transformers One and Deadpool 3 had no dropouts and both are Dolby Atmos but most TrueHD/Atmos discs were also fine in Kodi unless they went above a certain bandwidth which was mostly Disney stuff at the time so could still be something like that.
Or maybe it’s just completely random

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