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A
Anonymous
December 30, 2018
Question

Lightroom CC Classic - 4K Performance fixed?

  • December 30, 2018
  • 3 replies
  • 1928 views

hey guess currently using Lightroom cc and Classic cc on my iMac pro and the performance on the 5K display is awful - that bad that I gonna think about switching to Capture One.

my last chance trying it on my 2nd Computer with i7 8700K @ 4,7Ghz with 32GB RAM, 1TB Samsung NVME SSD + GTX 1080 Ti.

I wanted to buy an Dell 4K IPS Monitor - nur how will it perform on Windows 10 there? Is the performance there also so bad and better to get a 2560*1440 IPS rather than a 4K one?

hope you can give me the right advice

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    3 replies

    dj_paige
    dj_paige
    Legend
    December 30, 2018

    Here's a real live example of two people who upgraded to an Intel i7-8700k and are happy with the results. Performance Feedback Needed: i7-7700 and i7-8700 Systems

    J
    Community Expert
    Jao vdLCommunity Expert
    Community Expert
    December 30, 2018

    What part of performance is awful indeed? It is unlikely you'll see any difference in performance between platforms. People on both platforms come here to complain. Personally I have never seen it on either platform and on many different computers with different specs. It is certainly true that Lightroom does not do as well on very high resolution screens.

    A
    Anonymous
    December 30, 2018

    On my windows machine mentioned above with 2K TN monitor ( looking for a 4K IPS) it runs smooth as butter. On every of my Mac system is rather slow. Only Capture one is very fast on my Macs

    J
    Community Expert
    Jao vdLCommunity Expert
    Community Expert
    December 30, 2018

    The operations you are referring to when performed on a 4K or higher display are vastly dependent on the quality of the graphics card and the resolution of your images and probably not so much on the CPU. I use several Macs and it is really fast on my i9 machine whatever file I throw at it or whether it is displaying on the native display (2880x1440 I believe) or on a 4K display. It is perfectly usable on a 2012 Mac book pro as long as I don’t edit images from my 48 Mp camera but just from my 24 Mp one. Editing 48 MP files on the 2012 machine is annoying more or less like you describe since its GPU is very weak compared to modern machines(only 1GB of memory on the GPU). It works fine on the more modern Mac.

    a friend has a completely tricked out windows machine just recently built and it does not feel any faster than the i9 Mac book pro when hooked up to a similar resolution display and editing similar files.

    dj_paige
    dj_paige
    Legend
    December 30, 2018

    What actions in Lightroom have performance problems? Please be specific.

    A
    Anonymous
    December 30, 2018

    General UI Performance espcially on my iMac pro. Libary is not smooth as it should be. Opening raws and zooming it takes sometimes 2-3 seconds. moving the image while zoomed in is not as smooth as it is on my windows 2K monitor - spec is mentioned in my post above.

    camera raw cache is setup to 100GB, video acceleration is on (off made it worse).

    When setting the resolution down to 1600*900 on my iMac Pro - Lightroom Classic cc is really smooth. Also previews rendered 1:1.

    compared to Lightroom CC the Classic CC is for more much much slower!

    And as mentioned on my second computer with a Dell S 2716DG (2560*1440) Lightroom both versions run as smooth as butter. So my question is - because working with TN panel sucks, getting a 4K Dell IPS or will it suffer like the iMac 5k Display with thar  much performance drops?

    Otherwise i will get for my windows machine a 2K IPS Panel.

    Is here anyone who has really good performance on his Mac? ( I have an iMac pro 8 core, vega 56, 32GB ram) and a Mac book pro 15” i7 l, 16GB - on both Mac systems it doesn’t not run that fine Very laggy slow.

    When I installed Windows 10 with parallels on my iMac pro as a test and installed their my adobe applications, even in the virtual machine it was much smoother than on the Mac OS system itself.

    Im using Mac OS Mojave, newest version. Also a complete clean install didn’t fix it for me.

      Ian Lyons
      Community Expert
      Ian LyonsCommunity Expert
      Community Expert
      December 30, 2018

      ChrisJMV  wrote

      camera raw cache is setup to 100GB, video acceleration is on (off made it worse).

      When setting the resolution down to 1600*900 on my iMac Pro - Lightroom Classic cc is really smooth. Also previews rendered 1:1.

      The Camera Raw cache just needs to be big enough to hold a copy of the preview (.DAT) for each image you expect to be editing. Typically, 5GB is fine with 20GB giving lots of headroom. When the cache is filled the earliest preview will be removed to make space for a new preview. FWIW, I doubt that 100GB is necessary. In below screenshot I have 200 Dat files, which takes up just over 150MB of disk space. Do that maths to get an idea of how many you could store in 100GB.

      Can you post a screenshot of the Lr Catalog Settings panel as shown below. For this exercise, make sure you have it the preview size set to Auto.

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