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This is how I fixed this problem. It might help you but from what I've seen so far, even thought there are similar issues, the source of problems are different. I've ran sudo iosnoop -n quicklookd - it shown something like this: UID PID D BLOCK SIZE COMM PATHNAME 501 5656 W 56385320 32768 quicklookd ??/Quick ...


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It could help if you see kernel_task soaking CPU cycles. From https://support.apple.com/en-us/HT203184 Activity Monitor may show that a process named kernel_task is using a large percentage of your CPU, and during this time you may notice a lot of fan activity. This process helps manage temperature by making the CPU less available to processes that are ...


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All third party apps on the Watch currently are going to be slower than grabbing the iPhone, unless you can't get at the phone due to social constraints or it being inaccessible in a bag or pocket or some distance from you and the watch. This is because Apple has made every effort to let no code run on the watch at release. Third party apps get to run ...


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I would go with MacBook Pro for the better CPU, GPU (iris vs HD), and screen resolution since you are going to work with photo and video editing.


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I would try using opensnoop to see what files quicklookd is looking at. There might be a particular files that it is either having trouble reading or writing to. While they are using excessive CPU, open a Terminal window and type the following command. You'll be prompted for your password. sudo opensnoop -n quicklookd This should show you all the files ...


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I do have the same iMac as you. I believe Snow Leopard is the fastest system you can install in your iMac though its not supported by Apple anymore. I did the upgrade to 10.9 and I felt the system slower, but, I did that because some softwares required the upgrade to run. When Yosemite came your, I gave it a try. I made a fresh install and, at ...


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Anything below 10.10 the newest system has so much disk I/O it could fry the older hard drive.


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I have a 2008 iMac 8,1 Core 2 Duo running OS X 10.10.4 Yosemite. Yosemite actually consumes less HDD space and appears to run faster than older versions of OS X. My recommendation is always upgrade to the latest OS. Note also about two years ago replaced original 1+1GB RAM... now have (2+4) 6 GB 800 MHz DDR2 SDRAM. Works beautifully.



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