I'm running into some stuttering issues during preview while editing an HD multicam video in Vegas HD Platinum 10. So far I have 2 camera angles with two hours of 1080 footage from each one, and I'm planning to add one or two more camera angles. My graphics card is just listed as an 'Intel HD Graphics' card. My system is as follows: Windows 7, 32-bit, Intel Core i3 CPU, 540 @ 3.07 GHz. Board: H55M-P33(MS-7636), 4 GB RAM, 2.93 usable. I do have more than one external hard drive, but they are just your standard externals like Western Digital, Seagate, Iomega, etc. I was expecting the stuttering to happen at some point, as a friend of mine who does a lot of multicam editing had mentioned I might need to upgrade my video card, so I'm wondering if (A) this system seems adequate to get the job done with a new card, and (B) what video card you'd recommend to eliminate the stuttering. (C), do I need more RAM? I'm not into gaming, so that is not a factor. Thanks.