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Apple Computing Products:
macOS - Operating System
Macbook Pro ‘15 Retina (2015) sluggish UI
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<blockquote data-quote="lclev" data-source="post: 1791542" data-attributes="member: 307555"><p>If installing Sierra solves the issue then you have your answer. If not and the issue persists then it looks like it is back to a graphics issue. The fact an external monitor does not have the problem and runs at 1920x1080 versus the MBP's 2880x1800 it might be a resolution issue. Or it might be an issue with the Laptop's display itself not responding correctly - never seen that but anything is possible - bad or loose cable?</p><p></p><p>I will be interested to see if Sierra makes any difference. </p><p></p><p>Just a though - If the OP goes back to Sierra and High Sierra has already changed the format of the SSD to APFS, does that create a potential issue?? Just asking.</p><p></p><p>Lisa</p></blockquote><p></p>
[QUOTE="lclev, post: 1791542, member: 307555"] If installing Sierra solves the issue then you have your answer. If not and the issue persists then it looks like it is back to a graphics issue. The fact an external monitor does not have the problem and runs at 1920x1080 versus the MBP's 2880x1800 it might be a resolution issue. Or it might be an issue with the Laptop's display itself not responding correctly - never seen that but anything is possible - bad or loose cable? I will be interested to see if Sierra makes any difference. Just a though - If the OP goes back to Sierra and High Sierra has already changed the format of the SSD to APFS, does that create a potential issue?? Just asking. Lisa [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Macbook Pro ‘15 Retina (2015) sluggish UI
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