[SOLVED] Performance issues & invisible abilities after 3.21.1 (dx12) ref: 834 974 683

EDIT: The problems magically went away 06/07.05.2023 and I have no idea why.



Screenshot of Freezing Pulse in hideout 10 seconds after game-start.

Encountered the following problems just after 3.21.1 was released and have tested in 10+ different maps + hideout, with and without restarting game:

Monsters and players' abilities are invisible for a couple seconds-minutes after launching game. Duration of issue seems random.
Compared to pre-3.21.1: FPS drops when loading in a new zone (also when going to hideout). Game stutters when encountering specific content for the first time after launching game. Example: Game will lag when starting a breach for the first time after launch, or first time syndicate assassins spawns. After 5-20 minutes of playtime everything seems normal until encountering "non-loaded" content.

I know I'm supposed to only submit 1 bug pr. report, but I feel this is an exception since they're connected.
I Also tested Vulkan: had some issues there, but can't compare to pre-3.21.1 as I've been using dx12 since it was released.

Game settings:
Dx12
Windowed Fullscreen
Everything on Low/min
Dyn. Cull/res: off
Multithread: on

Other processes running:
Autohotkey
Awakened Poe Trade
Steam

System specs:
Windows 10 64bit
Nvidia 1070 (Driver: 531.79)
i5-3570k
16g ram
Focusrite 2i2 (Driver known to cause issues with anti-cheat programs)