NVidia integer scaling doesn't work on Fullscreen and Windowed Fullscreen

Right now Nvidia integer scaling is only working in Windowed mode, but not on Windowed fullscreen (or Fullscreen, but I used the former) - both on UI and 3D objects.

When I open the start menu through the Start keyboard key, it applies the desired effect as long as the menu is open, but the image returns blurry as soon as I close it.

Is there a way to make this work on Windowed fullscreen?

My Windows settings:
The main monitor where I game is a 4K one, set to 1920x1090 before opening PoE
Integer scaling is active on the NVidia control panel, and it works on Windows and other non-fullscreen applications.

My PoE settings:
Display: NVIDIA GeForce RTX 4060 Laptop GPU - LG HDR 4k
Mode: Windowed Fullscreen
Window Resolution: 1920x1080 (not modifiable)
Render Resolution: No Upscale - 1920x1080
Renderer: Vulkan
VSync: Adaptive
Triple-buffering: Enabled
Antialiasing Quality: Off
Upscale mode: Off
Dynamic Resolution: Disabled
Engine Multithreading: Enabled

Tell me if you need more info (and sorry for my bad English)