Even with nothing open, the memory used for Illustrator keeps climbing exponentially until I get a dialog box up from the operating system telling me that my system is out of memory and to force quit software. It will say Illustrator is using 300 GB of RAM (even though I only have 40GB)
Rosalina Hansen commented
Same with me on the latest illustrator 2022. I had to install previous version in order to work in illustrator. Last few times, my computer crashed. It would open the force quite window and say illustrator was running from 4 GB of memory to 250 GB of memory, up and down until it finally settled down or crashed the app or finally just crashed the computer. I updated to latest Mac OS but that didn't do anything to illustrator issues. I tried using external drive with 5 TB of memory as scratch disk, but didn't help much. Finally installed previous version of illustrator and all is working fine for now.
Same here Ai CC2018 uses only 300 MB Ai CC2019 2GB!! Same file, same working process!