I am working with a newly purchased MacBook Pro i7 with 4GB RAM memory. My system is configured with the Automatic Graphic Switching (I have also tried this with automatic graphic switching in off mode, forcing it to work with the high performance graphic card, with the same evaluation). From Photoshop CS5 prefs, this is configured to enable OpenGL Drawing and in the advanced setting, configured with the Advanced.
When I preview the 21MP image, zoomed to 100% and try to pan across the image with the help of provided trackpad on my MBP, the response coming very slow and stuck manner (when going slowly, you can get that the image moves from so many pixels in the flow of the movement rather than going proper manner). It consumes near about 5 'sweeps' of the trackpad to move across the entire image.
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