FPS Drops and Ups on strange situations

Hello there POE Team,

Hopefully you could help or give a direction where to go.

Long Time Play Session:

Hideout fps from 150-155~ down to

1.

102 fps
even 51 fps just happened before

by just opening stash

2.
fps drops by 4x ish when just picking up an item in stash or inventory. (no difference if stash opened or not)


Restart

Hideout 150-155~

Accessing Stash -8-10 fps

Item pickup only small fps glitch .. maybe 1-3

i just had some bigger fps glitch by picking up while writing this and alt tabbing (windowed borderless mode) but after 2-3 times picking up again okish



Fixed: Radeon Super Resolution activated in general AMD Software, but not active due not using lower Resolution did eat 50+ fps just because it was "activated" Turning it off did kick fps from 155 hideout to 220+fps hideout
Same time the changes while alt tabbing are gone.

3.

the most strange thing i discovered right now, i disabled the background fps limiter to see if that caused a problem with stash and items. while writing and tabbing to browser window i see my fps going up to 210-225 while in background (inactive window) switching back to poe the game drops to 140-150 again

so what could be a reason that game runs 50fps better in background?


kind regards

ingame settings:

2560x1440
dx12
vsync off
tripple buff off
antialias off

everything low or default except

texture quality high
texture filtering 8x antis
culling on
dyn reso off

engine mthreading on



System:

12400f i5

6700XT 16gb radeon

32GB 3600 RAM ddr4

wd black sn850x ssd

Yes, drivers are up to date..

Edit1:

Vsync different modes: alt tabbing result in 80 fps (using two different screens one is standard old hz screen and main one where poe runs and assigned to has 165hz)
vsync off 200 fps while alt tab

Edit2:

Changing to dx11 results in no fps changing when alt tab.
changing back from dx to 12 without restart result in hideout 10 fps more and stash open 10 more fps then before.
and again on dx 12 (after dx 11 change to dx12 without restart) when alt tab i get now 244 fps