Okay so I tried out the heli mission again, this time with an fps counter. Turns out I'd gotten a bit too used to the mission being unplayable, and in fact I'm not getting these 30+ fps that I stated. At the location you took your picture i get about 25 - 30 fps at the same settings you have. At high/ultra settings i get around 20- 28 fps there. ( I also made sure to have around the same view distance as you have). Have you tried out multiplayer (wasteland, etc.) with these commands on?