as no one else was tackling the problem, I have tried applying your patch, as I was continuing to get crashes. Thank you very much for your proposal! What I found out is that removing the distinction between standard and frequent update sounds, as you did, significantly increases CPU load for the sound process and decreases FPS. So I tried re-introducing the distinction. Even so, CPU load is still higher than before your patch, however effect on FPS seems smaller, at least in my test case. Before committing anything, I attach here the patch I am using, and would like you to have a look and to give an opinion, as not everything you have implemented is clear to me, so maybe there is a fault in my changes; if there is a suggestion to further reduce CPU load towards the original value, it is welcome.

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