poe2 stuttering with 6700xt, works fine for the first 30mins

im playing poe2 via steam(and all its magic) on a fedora41


as the title states game runs superb(for minutes) then the game stutters heavily

i already undervolted and underclocked my gpu but the problem still persists (gpu temp at 60deg)
this happens in 1440p both in 144 and 60fps


pc specs
cpu: 5700x (cooled by peerless assassin mini)

gpu: sapphire nitro 6700xt

ram: corsair ddr4 8GBx2 (OC to 3200mhz) (passes memory stress test via stressapptest) (i could test via other apps if you have suggestions)
psu: cooler master 750 gold 80+ (mini itx version)

OS: fedora 41
gpu driver: MESA 24.3.4

game is installed in a 512 kingston ssd (not m.2 though)

attaching a video showing behavior and historical data from LACT
the GPU and MEMORY clocks dips down and then climbs up as the game stutters

https://www.youtube.com/shorts/7drGWEP4DVg

EDIT: looking at the footage, the CPU bar/graph maxes out during the stuttering, as usual- thoughts on this?
EDIT: ran the GPU in FurMark at 1440p and it went steady 93 to 97fps for 32mins... i think GPU is good
EDIT: closing the game and immediately starting it resolves the stuttering, having to do this every 15-30mins tho is kinda tiring, like poe2's endgame ;^)
EDIT: it seems to be CPU issue, the CPU graph is going from 7ms to 50+ms during the stuttering event
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EDIT: played poe1 for 1hr and no stuttering issues, this could/might be a poe2 spaghetti code issue

POE2 char specs
crit(70%) spark bloodmage with choir of the storm equipped
maybe a dev team could try my setup and replicate the issue on their end?
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EDIT: played with another poe2 char and issue persists- not a choir trigger related bug
exit to login screen does not clear the issue vs. exiting the game
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EDIT: stuttering issue also occurs in poe1... damn it seems to be a cpu issue on my end :(
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thanks for the tip,

turning multi threading on and off during stuttering worsened the stutters and the fps, any more thoughts?

EDIT: looking at the footage, the CPU bar/graph maxes out during the stuttering, as usual- thoughts on this?