Hi -- is this the system with the i7 and the GTX 670? (if I'm remembering correctly)... You'd had audio issues on that system ... did a clean install or other adjustment fix that?
The Nvidia driver is again at the top of the latency list, while the high hard pagefaults are literally "off the chart". Something is hogging resources in the background. You can have Latency Monitor create the chart with the highest pagefaults at the top .... might yield a clue.
And of course, when broadcasting, make sure no Latency Monitor modules are loaded in or running ... since it is a source of latency itself.