Same here - "Cannot finish previewing" error, running out of application memory all the time, crashing etc. 23.0.1 is so slow it's painful. Struggling to scroll around the artboards in a 500kb file containing a few gradients and a bit of text. CC has been really tough going on my MBP since I updated all my apps last week. Also had problems with flickering cursor in Illustrator 23.0. Reverting to CC2018 until this is actually fixed.
Same here - "Cannot finish previewing" error, running out of application memory all the time, crashing etc. 23.0.1 is so slow it's painful. Struggling to scroll around the artboards in a 500kb file containing a few gradients and a bit of text. CC has been really tough going on my MBP since I updated all my apps last week. Also had problems with flickering cursor in Illustrator 23.0. Reverting to CC2018 until this is actually fixed.