Those micro freezes on approach

Hi. I was doing some automatic missed approach training in EGLL on 27L when i came across an issue that i seem to remember i had in the earlier NGX days.that sometimes the 777 micro pauses just. Prior to land and when aural messages is spoken. Was it an issue we just had to live with or was there a solution? Or is it only on my system?

It does not happened very often but kind of spoil the experience.

It must be related to sound i guess

Thanks

Michael