I recently upgraded from Windows 7 to Windows 10.
I often use a program overnight that consumes a large amount of RAM (I think around 7GB), and then in the morning I close the program. When I had Windows 7 the memory usage would drop as soon as I shut the program. However, on Windows 10 even once the program is closed the memory usage continues.
The memory usage is mostly attributable to System. Here it's not using much CPU, although sporadically it does use quite a bit of CPU.
A related question was asked here,and the most upvoted (although not the accepted) answer seems to take the line that usage of memory was a feature and not a bug. It states:
In Windows 10, we have added a new concept in the Memory Manager called a compression store, which is an in-memory collection of compressed pages. This means that when Memory Manager feels memory pressure, it will compress unused pages instead of writing them to disk.
It seems to me that this is making my computer sluggish. What's going on, and what should I do about it?

