PS CC 2018 on older iMac, very slow. [Edited for clarity]
OK, hope I am in the right place. I subscribe to the Adobe Photography package. I have just updated to the latest: Adobe Photoshop CC 2018.app, version 19. Because I am working on an older iMac with El Capitan OS, which has slowed my computer considerably, I want to "downgrade" to Yosemite. How will that affect my current Photoshop and Lightroom apps? Am I just asking for trouble?
[Moved from the non-technical Lounge Forum to the Setup forum... Mod]
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