That cracking sound doesn't only happen in the Virtual Arsenal and not only with tank engines. It happens on all maps with all kind of low frequency sounds.

Everytime you press Escape while a low frequency sound is played, you will cut the sound and the cracking noise can be heard.

I am not an audio expert (only mixed songs with Music Maker) but I think this is a DC offset issue with low frequencies.

Your ticket needs another subject. I suggest something like: "Sound cracking with low frequency sounds".

For your information: I closed your other ticket #0027804 (similar issue).

You should open your own ticket. I have no other sound problems and never heard cracking on twitch arma streams anywhere.