We found again a situation where one user kills the sound of other players around him just like we had with the wheel revs on the Golf Cart a few weeks ago.

Here is a way to reproduce:
-Pause and advance replay to ~10m15s replay time
-Spec [Ï] Tzu (notRaii) in cockpit-view
-Resume replay and watch until 10m39s

You will will flying objects and a lot of smoke
(as seen in the image) and the sound dies (along with many other weird effects, e.g. wrong gauges)

I've followed the steps outlined in the OP and the smoke does indeed show up along with a second of garbled audio before the game slows to a crawl. With the sound clipping prevention feature ENABLED the glitched state may be a bit hit-or-miss to reproduce, though. (On the first attempt at reproduction it didn't go wrong, so in order to glitch the game out I opened the engine sounds menu on the second attempt with SHIFT+A as it overrides the sound clipping option and disables it.)