![]() There have been persistent reports of some people have performance problems unrelated to 4K and 5K displays, and more detail could help Adobe eventually track it down. Be sure to include the detailed steps of what you've already done and the first ten lines from Help > System Info. Post the details of your idle and scrolling observations on the official Adobe feedback forum, where Adobe wants all bug reports posted: Lightroom Classic CC | Photoshop Family Customer Community. Select all photos and do Library > Previews > Build Standard-Sized Previews, and wait for that to complete (e.g. Go to Catalog Settings > General and click Show to open Finder on your catalog folder. This seems more of a longshot, and depending on the size of your catalog, you may have to wait overnight for the previews to rebuild. You could delete the previews database and then wait until LR rebuilds it. Building on Jao's reply, perhaps your Library previews database has been corrupted in a way that causes LR to keep trying to build previews behind the scenes. So it's conceivable that unchecking it could affect these performance problems.ģ. But Adobe changed that option a number of versions ago to control more advanced uses of the graphics driver and card throughout the application, including in Library. Up until a number of versions ago, that option only affected Develop's use of the GPU. Try unchecking Preferences > Performance > Use Graphics Processor. If you haven't already, reboot the computer.Ģ. Continuous scrolling should normally use about 100% or less.Ī couple more thoughts, which are more of a stretch:ġ. A completely idle LR should be about 5% plus or minus. It's between 80-600% when scrolling picturies Its between 50-100 % when doing nothing at all for 10 min.Ģ. Yes as I wrote both address and face detection are disabled, and also the sync with Lightroom CC.ġ. And what is the sustained CPU usage as you scroll continuously through the thumbnails in Library? preview generation) in the progress bar in the upper-left?Ģ. With all those disabled, can you verify the CPU with LR idle for at least ten minutes and nothing running (e.g. Just to double-check, you've verified by clicking on the identity plate in the upper-left corner that address and face detection are disabled, right? Make sure Sync With Lightroom CC is also disabled - that can sometimes go wild and use a lot of CPU.ġ. ![]() The fans drive lots of people crazy (including my wife), but that's the way Apple designs its laptops. And the Macbook Pro is designed to run its fans during high CPU usage. LR deliberately uses as much of your CPU as possible when rendering raws and merging into HDRs and panoramas. The CPU usage go back down when I’m not doing anything in LR. I used Activity Monitor to see the CPU Lightroom CC is using, and it spikes up to 1291% ! When open LR CPU is 216% and with HDR rendering 5 RAW pictures it’s above 1000% CPU and the temperature peaks at 101☌ when measuring with Intel power gadget.
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