So, I have been having this issue for a while now, it's not every day but it happens sometimes. My ram goes 100% usage even when I'm not doing anything that uses that much ram. and it will stay at 100 and lag everything. even if you were to add the stuff up in task manager it most likely wouldn't equal out to the amount being used. A Simple restart will fix the issue, but I would like a permanent fix. I believe it is a ram leakage issue and would like to know if anyone can help. there are some pictures of my task manager so you guys can see. http://prntscr.com/hsquzs
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