One more thing to add about Overwatch - with all the attention they give to audio, if your CPU is pegged and the game is trying to render 3d audio, nothing can

One more thing to add about Overwatch - with all the attention they give to audio, if your CPU is pegged and the game is trying to render 3d audio, nothing can save it and it drops audio. The end effect is that on low-powered hardware your audio can end up buzzing. In addition the high costs of dolby atmos processing on the CPU affects the rest of the game, such that turning off dolby atmos is a viable way to get higher FPS at the cost of lower-fidelity audio.