So here’s a weird one: yesterday I used Intel Extreme Tuning Utility to undervolt my CPU by .035v. I only changed the voltage, I left all other settings at the default (53x P/42x on E). Everything was stable and working as it should.

Later in the evening I was watching videos on YouTube and began to notice that with every video the audio would start fine, but get progressively out of synch after a few minutes. It only did this using my mobo’s audio outputs and was fine using my interface audio via USB. My motherboard is an Asus Z790P Wifi. Finally, I got fed up with the problem and just rebooted my system and low-and-behold: no more issues.

This evening, after having watched an hour of videos without a problem, I again used the hotkey combo to undervolt in ETU in the middle of watching YT videos. The audio immediately began to go out of synch after a couple of minutes. I turn off the undervolt and the audio is fine.

So, anyone have any explanations for what might be happening? It feels like what would happen if a clock frequency is slightly off, but no clock frequencies were changed.