I upgraded all my Adobe apps yesterday, including LR 10 Classic. Using a powerful 2019 6-core iMac 27" which tore through tasks with LR 9 Classic, but 10 seems to have slowed down most tasks with GPU support enabled. This is particualrly obvious when using 'Remove Chromatic Aberations' and 'Enable Profile Corrections' (the results take at least 1-2 seconds to appear, which is 1-2 seconds longer than before), and selecting 'Auto' for lens transformations also takes a while (whereas before it was instant). This on Canon 5D Mark III RAW files and HDR dng files.
How do I know it's GPU support? Because switching off GPU support makes things *almost* as fast as they were before.
What's up with that? I know new GPU support was added to 10 Classic, so what's broken?
Hi, my apologies, I didn't even relaise this wasn't a dirtect line to Adobe. Will send them direct product feedback.
An update from my side: it's definitely a LR 10 Classic issue. I rolled back to LR 9.4, enabled GPU support, anbd everything was back up to full speed. I don't run any plugins, face detection is off and mobile syncing is off. Adobe has broken something in LR 10 GPU support, hope they fix it soon.