Sierra updated causes mouse cursor freezing, lagging, sticking when multiple Photoshop windows are open. Happens when scrolling off your window of focus over another window that is out of focus, and then back onto your window of focus. This is when the mouse will barely move. Clicking the mouse on the current window unfreezes it, but as soon as you scroll off and on your window it happens again. It also unfreezes if your able to scroll off the edge of your window of focus. Tested on multiple MacBook pros and same issue. Occurs when MacBook pro IS connected to external monitors via thunderbolt, HDMI, etc. Makes working in photoshop extremely frustrating. Please help!!!
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