Lightroom Classic CC 7.3. When creating slideshows in PDF format, I get bright flashes after most slides display. Tried different Macs to create and display. (Automatic mode with 5 sec length. Tried 1 sec and no crossfade,) (2011 27" iMac, 2.7 GHz, Core i7, 512 MB V RAM, 16 GB RAM and 2016 MBP 15" Core i7, 2.6 GHz, 2 or 1.5 GB V RAM, 16 GB RAM)
Hi PilotJimL,
As you're seeing flashes after a slide in a slideshow, could you please try deselecting "Use Graphics Processor" located under Lightroom's Preferences > Performance, then relaunch Lightroom and let us know if it helps?
Also, please have a look at this article for Lightroom Classic CC's system requirements, as I believe the 2011 iMac doesn't meet the system requirements as it has only 512 MB of VRAM: Lightroom Classic CC system requirements
Regards,
Sahil
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