I'm having trouble working with Illustrator, it's extremely slow. I've always worked with several software open at the same time. But now I have to close all programs to be able to open Illustrator, and still, I face difficulties to move a shape or a group of shapes. It doesn't matter the size of the file. At all times I have to wait for the movement to be carried out. I'm going crazy.
Illustrator version 26.5
iMac (Retina 5K, 27-inch, Late 2015)
4 GHz Quad-Core Intel Core i7
32 GB 1867 MHz DDR3
AMD Radeon R9 M395 2 GB
I understand this feeling as have battled many times in past on my computers and my colleagues. Thankfully not as much recently. There were some data miners sitting in cookies but not as many so putting that suggestion last. Did you have any new OS or AI plugins or system changes?
OOBE RESET MAC
PREFS RESET (thorough) change 22 to version you have
Finder >> Shift Command G
~/Library/Preferences/Adobe Illustrator 22 Settings/en_US*/Adobe Illustrator Prefs
rename Adobe Illustrator 22 to Adobe Illustrator 22 old
In your browser go to privacy tab and clear browsing data and cookies.
I did everything you suggested, but nothing came of it. I installed version 25 and everything is normal now. Thank you for your willingness.
KEEP out of illustrator v26.5
We are sorry to hear about your experience. In addition to Mike's suggestion, would you mind trying the steps suggested in this helpX article (https://helpx.adobe.com/illustrator/kb/optimize-illustrator-performance.html) and let us know how it goes?
We'll be looking forward to your response.
Thanks & Regards,
It didn't. The way I managed to have peace in my heart was to use version 25 again. More stable and without bugs. I recommend it to everyone who has this lag problem.