Sorry don't have the full solution for this one. However I have a feeling this may be to do with the High Sierra update, did you upgrade to High Sierra around the same point as the other CC apps? There are some known issues with illustrator and High Sierra that sound similar to yours which are also fixed when you disable GPU acceleration. They mention disabling it thought it were a 'fix' which is crazy as GPU zoom panning etc. is a huge part of using Illustrator on these machines and everything is super slow if you disable it. Known issues - Running Illustrator CC on macOS 10.13 High Sierra I am holding fire upgrading High Sierra and all my adobe CC apps until they can confirm that these issues are all fixed, but it's been radio silence on the issue since November. Perhaps I have not found the correct update/news page though so if anyone more in the know could advise the current state of Illustrator/Indesign running with High Sierra and if all the bugs are now officially fixed, particularly the one mentioned above that would be super. Adobe have had the developer versions of high sierra for ages before it's launch and still months after launch afaik it's still not fully fixed. iMac5k 2017 64GB int_2TB SSD
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