Finally re-installed the OS.
Updated drivers
Everything
Lost Coast runs at DX 10, Max AA/AF, All settings on High with HDR, Full res (1366x768) @ 20FPS
Holy fuck. I didn't expect it to be this good ._.
I recently read somewhere I5's have their own shader clocks, which is why it runs so great on this thing.
Gonna try out Mirror's Edge later today. If it's smooth at mid settings, I'm going to keep this one as opposed to selling it.