Strange framerate issue in editor

​GPU: 1060 6GB
CPU: I7 7700K @4.2 Ghz
RAM: 32 GB
Windows 10 64 bits
Blank scene runs between 25 and 35 fps (was getting like 150 fps weeks ago)

As reading thousand “low fps” topics, I’ve tryied :
Turn off Nvidia overlay in GeForce Experience
Close all background process
Turn off Windows defender
Update drivers (GPU, motherboard)
Still the same low framerate.
Games are running fine (Witcher 3, Far cry 5, running at 70+ fps)

What I really don’t understand is that GPU visualizer is reporting something like 3ms for rendering while “stat fps” command is reporting something like 33ms :