Loud noise on game launch

When I launch the game, one of three things happens:

• There is a loud buzzing noise, like when there's a loose cable in a sound system. The sound will never stop, and I have to quit the game and relaunch.
• There is a really loud white noise sound. I mean really loud, like make-you-pee-your-pants loud. But it's only for a second, right at launch, and then the game plays normally.
• On very rare occasions, the game launches without any screeching.

This isn't new to Release 30. I think it started in Release 29, maybe earlier, and lazy me figured it was widespread enough to get fixed, but it's still happening as of this morning's update. I couldn't find any threads about it, so maybe it's just a problem with my setup.

It has gotten worse, to the point that I have to launch the game probably 10 times to be able to play. It has been happening with two different headsets, a Logitech G930 and a G933, both of which use their own dongle for the sound card. I'm running Windows 10.