I have noticed that when zoomed into an image in Photoshop, grabbing it with the hand (spacebar) results in varying response from the program. Sometimes the image moves smoothly within the window, re-rendering the newly exposed portions quickly. Other times, movement is jerky and re-rendering is much slower. I discovered today that when I expanded the window, response was slower.
Then it dawned on me. Expanding the window placed a portion of it under the Dock and this is what slowed Photoshop down. So I did some tests and sure enough, as long as the active Photoshop window was not obscured by the Dock, everything worked quickly and smoothly.
I haven't tested this with other Classic programs but it seems reasonable that you should get better performance from all Classic apps if you keep the bottom edge of Classic windows some distance from the Dock.
Then it dawned on me. Expanding the window placed a portion of it under the Dock and this is what slowed Photoshop down. So I did some tests and sure enough, as long as the active Photoshop window was not obscured by the Dock, everything worked quickly and smoothly.
I haven't tested this with other Classic programs but it seems reasonable that you should get better performance from all Classic apps if you keep the bottom edge of Classic windows some distance from the Dock.
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