the process is the search service (or Indexing Service) of Windows. It is a service charge of exploring the contents of the hard drive to facilitate the search for a file on it.
However, this service can be a little heavy on resources (CPU, RAM, hard disk access) and can significantly slow down your computer. This is reflected mostly by a hard disk which is constant noise, even when the computer is not requested and a system that is slow to respond.
To remedy this, simply disable the Indexing(Disable Search Service