Question GPU usage and FPS dropping in intervals

Mar 29, 2021
Hello, I have a little problem.

I am going to describe it on Forza Horizon 4. I start the game and it's running 60fps constantly.. then, for a few seconds the FPS drop to like 15 - 25 and sometimes I lose all my inputs. So I am just sitting there not touching my keyboard and the car is doing whatever it was the last thing I did.. I turned up FPS counter and GPU stats while playing Forza and It seems that while the game is running at 60fps, the GPU usage is about 60-70% and then when the drop occurs, GPU usage is at 10%. After the drop it goes back to normal again.. this repeats every 5 - 8 seconds. This happens the same way either on very low graphic settings or high graphic settings.

I tried allowing GameDVR in registry editor, updating all the drivers, and played with nVidia Control Panel (I am not really comfortable with it though), even soft factory reset but still nothing is solved.
This occurs with every game and software that requires high GPU usage.

My stats:
CPU: Intel Core i5-7300HQ CPU @ 2.50GHz 4
RAM: 8GB (7.85BG available)
GC: nVidia GeForce GTX 1060
OS: Windows 10 - 64bit