You could try turning off all those programs running in the background (judging from the stuff I saw in the video), and maybe even kill explorer.exe but that might not make much off a difference on such a strong computer, I'm not used to high end^^
I am from Brazil, sorry for my bad english...
i have a laptop with a similar cpu a 720qm and I am think in buy a 920xm too,
you tested other games?
if you can put a list of games playble now,
i will be grateful..
games like:
Donkey kong, Last story,Sonic colors,Xenoblade,Monster Hunter Tri,Tatsunoko vs. Capcom
these games running well?