Very bad memory leak windows 7 64 bit

Hello, about two weeks ago I started to have a memory leak, unfortunately right around the time wildstar came out. Just leaving my computer idle the memory just keeps piling on, to the point that if I leave it on over night and wake up the next morning, it's idling at about 90% usage and a constant 30ish% on the cpu.

I figured it was a virus, although I haven't gotten one in years, so I ran malwarebytes and a couple of different antiviruses and nothing came up. So I thought it was bad memory, bought two new 4gb sticks and through them in, and exact same thing happened even on 16gb, it's now taking up 11gb of ram just idling, and resource monitor shows that barely 3gb are actually being used. The only odd thing I noticed is that svchost seemed to be taking up a ton, but nowhere near that much.

Really unsure of what to do aside from system restoring, but I would rather know what this issue is and get it fixed then do that. Any help at all would be fantastic. Below is a link to pictures of my task manager and resource monitor.

imgur: the simple image sharer
imgur: the simple image sharer

Wildstar isn't the source of it, I was just pointing out that it was around that time, this happens even if I don't boot wildstar up at all.