**UPDATE - SOLUTION HERE: • Shadowplay Mic Static Fix The problem lies within the latest version of NVIDIA Geforce Experience (version 3.6.0.74), and you need to rollback to version 3.6.0.76 and try not to auto-update!**
Yet, another issue I'm having with ShadowPlay since the update for NVIDIA Experience on 10 May 2017. Note that the buzzing is not always this loud and happens only on the right channel. Also, it occurs when the microphone setting is turned on, though I have tried reinstalling software/drivers and trying out different microphones, but to no avail.