I can hear your mind you have been thinking Why do you need so much RAM! Well I use CAD Designer I need high resolutions with many layers on many occasions I used more than 32GB of RAM So, I got annoyed with the limitations and upgraded to 64GB which is my workstation maximum supported limit.
But the think is windows 10 seems to insist on eating up a percentage regardless of how much I have. I remember having 32GB and it being way lower, so it almost seems like a percentage is taken no matter what. And yes you might be yelling-
I have chrome which is almost occupying 4GB of RAM, but that is basically it, there are 4 files above 100MB, and the rest are all tiny.
I can count a little over 1GB of ram actually used in the processes tab I am not sure why the Windows is not utilizing all the available memory??