I have 32GB of RAM on my Windows 7 x64 system, but it seems every time I get to around the 85% utilization mark everything starts to go haywire. Windows nonstop complains about low memory, Firefox and Chrome tabs or the entire browsers always crash, my Aero theme always reverts to a basic less memory intensive one etc. I can't figure out why.. Task manager still claims I have 15% memory left, which equates to ~5GB, yet it never uses it. I have 70GB of HD space free on an SSD for paging.
I had this problem when I had 16GB of memory so I doubled it up, but now every application just uses twice as much memory as before and it really didn't solve any problems.
I have tested the memory and there are no errors identified.
What can I do so it uses my entire 32GB of memory in an efficient manner?