Photoshop :: Choppy / Jagged Movement When Moving Around On Zoomed-in Image?

Brand new MacBook Pro - Non-Retina - OSX 10.8.2 / 2.6GHz Intel Core i7 / 8GB RAM / 750GB HD (currently 522GB free space) / CS6 Extended Version 13.0.1. x64
 
I just got a new MacBook Pro this past week and immediately discovered that whenever I would try to move around on a zoomed-in image (using two-finger scrolling on my trackpad, as I've done for years), it would be very choppy/jagged/sort of jumping pixels.  I've changed everything in Photoshop--Preferences--Performance multiple times (including the graphics processor settings, memory usage, history & cache), as well as all of my scrolling and trackpad settings, and have also tried with and without automatic graphics switching. 

I have this issue in both CS6 (downloaded directly from adobe.com last night, extra updates done immediately), and CS5.  I tried CS4 and there was no issue...but I didn't get a brand new computer to use an old version of Photoshop.  Went into the Apple store today to see if they've seen this issue before, but the person I spoke to had not (and knew nothing about Photoshop...not that I expected him to). 

I have a few friends who have this same problem - some just deal with it (or don't use Photoshop enough for it to be a bother), some have gotten their computers replaced (but with no actual answers).  Apple wasn't convinced that this was a hardware issue in my case, but did offer to replace the computer (however it will take a couple weeks, as it's a custom order).  I've spent countless hours searching these Adobe forums (and the rest of the internet) for insight.[URL]...

This happens on ALL images, regardless of file type and size (the image shown in this video is just a jpg with no extra layers - working on RAW files with multiple layers produces the same result, no worse).  And once again, I have changed everything in the Performance Preferences in PS (including the graphics processor settings, memory usage, history & cache), as well as all of my scrolling and trackpad settings, and have also tried with and without automatic graphics switching in my energy saver preferences...all multiple times, all with closing/reopening PS, all with restarting my computer afterwards.  Have I missed something, or do you guys think it is more than likely a hardware (RAM, graphics card, etc) problemHere is my (current) system info - again, I've changed the PS performance preferences multiple times -
 
Adobe Photoshop Version: 13.0.1 (13.0.1 20120808.r.519 2012/08/08:21:00:00) x64
Operating System: Mac OS 10.8.2
System architecture: Intel CPU Family:6, Model:58, Stepping:9 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, HyperThreading

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