Your processor is clocked at 2.2 GHz by default in order to save power. Try setting your computer power plan to "High performance" so you can get the most out of your Turbo Boost.

Everything else depends on your PCSX2 settings. Have you changed anything?

http://wiki.pcsx2.net/index.php?titl...3:_Subsistence
Quote Originally Posted by PCSX2 Wiki
Setting the SPU2-X Synchronizing Mode to "Async" may speed up the cutscenes but can cause stutter and out of sync problems in-game.