Question Audio glitches and then unusable PC

Dec 10, 2020
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So this is my PC. I'm not sure the RAM and the HDD are the exact same as the one i have but that is unrelated.
While I was on twitch today, I was having some audio glitches. At first, i thought it was the streamer who was having these issues, but they continued even after i closed that stream. After a while, the PC was starting to slow down, and at a point it became unusable.
After a force shut down, I ran 2 antiviruses in the hopes of it being a virus. They found nothing.
It stopped happening for a while, and then when i was playing Apex it happened again.
I'm afraid that this is a GPU problem, what do you guys think, what can I do to find the source of this issue? Or at least how can I properly explain this problem to the shop I bought the PC from.
Today was the first time I had this kind of problem.
Thanks in advance.
 
No, I mean is the audio coming through HDMI? I have my headphones plugged into my monitor, where the sound comes from my GPU's audio processor.