RAM usage is always at 90% for no reason

[VertexG]

This started happening a couple of days ago. My computer displays on the task manager that my ram usage is at 90%. I do not know if I have a memory leak or if this is just normal. It seems that there is no performance issue so far. I read this article http://lifehacker.com/why-is-windows-10s-system-process-using-so-much-ram-1725076206 and I just presumed that it is just normal behavior on Windows 10. But, I am starting to get worried that it is not normal behavior. I have 8gb of RAM by the way.

Screenshots of problem:
https://gyazo.com/975eb7a1a9c74e2807f9c5f92c815e6e
https://gyazo.com/94e7f8fcea8fa2a2efe1d6c26091382c
https://gyazo.com/8949515ca93ca8120892c27c6625c96c
https://gyazo.com/cb6c72a870cb14cd6caa06598e800a95

If it is a memory leak I have no idea what is causing it. This randomly started happening and my computer seems to have no performance issue such as laggy mouse, etc.

Thank you

 

[JackNaylorPE]

Well Google Chrome is the obvious issue.

Reboot the machine and log memory usages ,,, whatz there that shouldn't be using that much memory

Add various items and see whats using what ?

 

[VertexG]

So I just pressed Reboot instead of actually shutting down the system and turning it back on, and it fixed the issue. My RAM usage is down to 5 - 10% while at idle. I feel like an idiot, but why did that fix the issue?

 

[JackNaylorPE]

Because windows grabs memory and refuses to let it go ... I used to reboot my NT4 boxes, at most, every 3 months ... not today's OS's. I don't go a week w/o rebooting anymore.

 

[VertexG]

Well Google Chrome is the obvious issue.

Reboot the machine and log memory usages ,,, whatz there that shouldn't be using that much memory

Add various items and see whats using what ?

Because windows grabs memory and refuses to let it go ... I used to reboot my NT4 boxes, at most, every 3 months ... not today's OS's. I don't go a week w/o rebooting anymore.

Thanks for your help I really appreciate it.