POE 1 & 2 - 1 second stutter/freeze with CPU spike on graph [with clips]

Hi,

I've been struggling with an issue for a while and I'm honestly kinda lost. I will be providing multiple video showcases with the tech graph up.

This problem only occurs in poe 1 and 2 (as in, no other game does this). I'm basically experiencing big 1 second stutters/freezes. Those feel random. I can sometimes play for 3 hours and not get any (but still the occasionnal okay-ish stutter, just not a full 1 second freeze) but other times they can also appear in the first 5 minutes of gameplay. Sometimes, I feel like they happen on certain "triggers", for example: when an elite appears on my screen, when an elite or boss casts an ability, on item drops, on killing an elite, an event appears on my scree, but not always.. It feels like the game "looses contact" with my CPU for a second, but just the game. If I have a song playing in the background, the song doesn't stutter when the stutter/freeze happens in the game, same when I watch a movie on my second monitor, it stays perfectly smooth, the only thing that stutter/freezes is the image, you will see in most of the clips that the sound keeps playing and stays smooth (clearly visible on the last video).

I tried everything, clean windows install, EXPO off, EXPO on, C-states on, C-states off, playing with the bare minimum background services (by configuring a clean boot in "msconfig"), SMT on, SMT off, unchecking CPU 0 and 1 in process lasso, changing renderers, locking framerate, I don't use VRR, V-sync on, V-sync off, changing power plans, updating BIOS, installing my games on different drives, trying different AMD chipset drivers, memtest done with no errors, same for other parts using OCCT, etc...

My specs:

7800X3D (stock)
2x16GB DDR5
9070XT 16GB (stock)
2TB NVME + 1TB NVME


Video showcases with tech graph:

https://medal.tv/fr/games/path-of-exile-2/clips/kYcwn3cqf5ZCDJ1LI

https://medal.tv/fr/games/path-of-exile-2/clips/kYcxc908b1sRtKyQ4

https://medal.tv/fr/games/path-of-exile-2/clips/kYcy2nbZI5fXwrpov

https://medal.tv/fr/games/path-of-exile-2/clips/l1thbvZjGf_pgIDXM

https://medal.tv/fr/games/path-of-exile-2/clips/kYcdoLu0ajeKPK1mT

https://medal.tv/fr/games/path-of-exile-2/clips/l1tTRvfrwx87q1bkX (I'm use to this amount of stutter, not the very first one that occurs right before the dialogue starts, but the two smaller ones during combat)

https://medal.tv/fr/games/path-of-exile-2/clips/kXqdrV0ish15QdPx4

At this point, I would actually feel relief if I can get confirmation that all this is somehow caused by a faulty CPU component (which I would find weird since it only happens in PoE 1 and 2..). I don't mind getting another one, but still, would love to learn more before going to extreme lengths because of one game..

In advance, thank you!