![]() To add insult to injury, Apple deprecated OpenGL so it's not clear if they're ever going to fix it. ![]() Why this affects Lightroom is beyond me, since it should theoretically replace OpenGL with Metal, but in practice the system info pane in Lightroom does show it's using OpenGL extensively still. It's also why people using LR on MacBook Pros will be less affected: they simply have fewer pixels to deal with. Of course it's not a solution at all, especially since we get these big and high-res screen precisely to do proper photo editing, but it's proof that it's related to the broken implementation of OpenGL in Mojave. I tried doing all three with Lightroom and guess what? It gets better. Workaround with Slic3r include:ġ) using the "Open in low resolution" checkbox on the app's info pane in the Finder, and/orģ) moving the window to a non-retina screen (if you have one). That's because they use OpenGL extensively, and somehow Apple broke it on 10.14, so everything must be done by the CPU.Įspecially on a retina (hi-dpi) screen, this puts a lot of strain on the CPU. I'm pretty sure that this is related to Apple breaking (and deprecating) OpenGL in Mojave (perhaps not everything was converted to Metal?) because it's EXACTLY the same issue I noticed with another, completely unrelated application called Slic3r PE (and to a lesser extent with OpenSCAD): it worked fine on 10.13, but became horribly slow on 10.14. Tried creating a new catalog, tried deleting all preferences, etc. Same here, on an iMac 5K (2017) with a quad i7 CPU, 24 GB of RAM and 8 GB of VRAM on macOS 10.14.2. Maximum thread count used by Camera Raw: 5Ĭamera Raw SIMD optimization: SSE2,AVX,AVX2Ĭamera Raw virtual memory: 1105MB / 8191MB (13%)Ĭamera Raw real memory: 1149MB / 16384MB (7%) Virtual memory used by Lightroom: 4,947.6 MB Real memory used by Lightroom: 2,594.5 MB (15.8%) Real memory available to Lightroom: 16,384.0 MB There is more info below, but I hope I've covered the bulk of it. These make a slight improvement to the lag but still don't sufficiently fix the problem - adjustments are still delayed. I've tried enabling Smart Previews and "Use Graphics Processor" in the preferences tab. ![]() But I've seen a few other people struggling with similar issues on older machines than my own. My overall machine performance hasn't suffered since OS Mojave. The slider is unable to keep up with the speed of the mouse, and therefore I can't see my adjustments in real time, making the whole editing process much slower! I've had Mojave installed for a few days now and I'm now noticing significant slowing down issues in Lightroom Classic.įlicking between photos in the develop tab has slowed, but more importantly I'm noticing major lag when tweaking the adjustment sliders. ![]()
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