Nautilus uses a lot of CPU when you log in as part of the process of loading your desktop and setting up a few things behind the scenes. So long as it returns to a normal level a little later, nothing is wrong with your system, and there is little you could do to change that happening.
Nautilus uses a lot of CPU when you log in as part of the process of loading your desktop and setting up a few things behind the scenes. So long as it returns to a normal level a little later, nothing is wrong with your system, and there is little you could do to change that happening.