Turn on Aero (it speeds up both Game and Window capture sources). Don't use Monitor Capture under Win7 under any circumstances, it's horrible, awful, terribad and slow. Use a Game Capture or Window Capture if possible, and if not possible then use a Game Capture on the DWM process. It's how you do passable monitor capture under Win7.
Also, you start off with 720p@30fps, 2000kbps in that log (good settings).
You then switch to 720@30, 1500kbps (bare minimum for watchable 720p, will have lots of pixellation especially under high motion games).
Then switch to 1080p@30, 1500kbps (no stahp, what are you doing, this is going to look like a poop hot pocket).
Set it to 720p@30fps, 2000kbps again. You are never going to get a 1:1 stream, due to the technical realities of compression and bandwidth tradeoff. If you play extremely high-motion games, you may want to consider downscaling further to 480p, to improve your image fidelity in the case of extreme pixellation.
Also, be aware that a number of people have reported issues when streaming over Killer/BigFoot NICs, though your metrics in the log do not appear to indicate that is happening at this time.