Audio popping issue

[minopoki]

Your processor is so hot it is throttling itself to prevent damage. Cool it off.

Maybe that's it, it's throttling more after the overclock, that's why things seem worse.
I don't think there's much I can do... I could try new coolers, it would probably make it better, but not sure it would be enough...
I use a two fan Corsair water cooling, reapplied thermal paste about 1.5 year ago, could do it again, but I don't think temperatures have changed much from then. My guess is my coolers are too old (almost 7 years now, and I heard watercoolers wear out faster), but I'm not sure I would want to invest money in new expensive cooling hardware just for the sake of FFXIV. I'd rather save it to when I upgrade my whole system in the future...

Besides of anything, game still played fine before 6.0, other games are still fine, so it's still up to SE to fix it, it really seems I can't do much more on my side. Thanks for the suggestions anyway.

EDIT: Overclocking might still have good results to other people though. It's really looks an interesting suggestion for those who are secure about messing with BIOS options.