I have just updated windows 10 and after restarting the computer, an old issue that has mysteriously fixed itself before reappeared.
My mouse/keyboard input is lagging whenever I open or focus on a program window that plays sound (or a video with sound). Even windows notification noises when a USB is inserted cause that lag.
Clarifications :
I can play Gifs normally.
Muting all sound coming from speakers doesn't help.
I have updated all drivers
The issue only happens on windows (I USB-booted linux and played music and videos without any problem)
here's a preview, notice how the mouse only lags when I focus on chrome.