I am using nvidia 1060 and intel 7700k. I used blender 3.2 for rendering. it is ok and fast using gpu. But when i updated to blender 3.3 and had done all rendering setting, it uses cpu and cost a lot time.
https://youtu.be/PcpyDHZiTuQ blender 3.2 rendering ok https://youtu.be/UIGFANNUhc4 blender 3.3 reanding using cpu
This happened before when using 3.2, but after updating nvidia drivers gpu started to work. This time it not works for 3.3.
I have seen other posts:
Why my GPU load is low when is rendering a scene with Blender?
Rendering in blender wont use GPU
They dont work for my case.
As I can see in the 2nd video you switched it to None before closing the Preferences.
In the Preferences > System switch it to Cuda before closing Preferences and then try setting the Render Properties.