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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.

Windows 10 RAM usage

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.

Task manager

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?

  • try the TH2 Build 10586 which is likely to be the November 2015 Update for Win10 and look if this improves your situation. – magicandre1981 Nov 06 '15 at 05:50
  • Threshold 2, will likely be called `Fall Update` not ` November 2015 Update` if it isn't called Threshold 2. – Ramhound Nov 06 '15 at 12:23
  • The compression store runs in the "system" process, which per your display is using less than a tenth of your CPU. So, no, it's very unlikely to be "making your computer sluggish." – Jamie Hanrahan Jan 30 '16 at 02:40

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