APT Causes FPS drop / increases CPU latency

[TheObelisk89]

I noticed that using APT causes the CPU latency to increase from ~4ms to ~12ms, while the CPU load is not noticeably affected.
Also, the fps drop to less than half; the game becomes unplayable.
Once thing to notice is that the mouse cursor will begin to look somewhat transparent and flickers.
Another thing, running PoE in windowed mode, when moving the cursor out of the PoE frame, the fps return to normal.

Drivers are up to date: Mainboard BIOS / Chipset Drivers / Graphics Driver
Windows uodates also are.

I tested several settings, to no avail:

• disabling vertical sync
• disabling variable refresh rate
• disabling Auto HDR
• disabling optimization for windowed games
• run the game in fullscreen / windowed / borderless mode

So far I've run out of ideas of what to test, but I am willing to try more.

My System
Windows 11 Pro
Mainboard: ASRock X570 Taichi
CPU: Ryzen 5800X3D
Ram: 32 GB DDR4
GPU: GeForce 1080 TI