Stuttering/Freezes when big groups of mobs appear

After 3 years of not playing i decided to return to the game for this league, and even though i'm enjoying myself, the game itself is not running as smooth as i hoped.

When big groups of enemies appear on my screen, for example releasing a patch of harvest mobs or big groups around shrines, my game starts freezing and stuttering to the point that it's unplayable. I've died more to freezes than to actual mechanics and it's starting to really annoy me. I usually have around 60-80 fps when running maps (in towns fps can drop to 40-50 fps), and my internet speed is 10 ms ingame.

I've changed the networking mode to Predictive, set all the settings to lowest, tried all the different renderer options, and even though the networking mode seemed to help, all the rest does nothing for me, and the problem doesnt go away.

My specs:
- i5 @ 4,3 Ghz
- 16 GB RAM
- Geforce GTX 1060 6GB
- Installed on SSD

Any other game like Lost Ark ,Guild Wars 2, Monster hunter world or even the Witcher 3 work perfectly fine, this only happens in PoE.

Any idea what the problem might be?

edit: Also, if i change my resolution to 1920 x 1080 fullscreen, my text in the stash tabs becomes huge, is this normal?
https://imgur.com/a/Tu2SOLC