Hi @Robert36151818n76c,
I’m really sorry to hear about the crashes and performance issues you’re facing. To help us narrow this down, could you share a bit more info like your OS and Illustrator version, whether the issue happens with all files or just specific ones, and if you notice any pattern before the crash? Do you also see the Adobe crash reporter dialog when it happens? If yes, please submit the report so I can check the logs: https://adobe.ly/47iT7mM.
In the meantime, please try the steps outlined here to see if they help: https://adobe.ly/3VyCH2l and also check this guide on improving Illustrator performance on Windows and macOS. It would also be useful to test Illustrator in Safe Mode to rule out conflicts with any third-party apps or services. Ref:
Windows: https://adobe.ly/47XjfUv
macOS: https://adobe.ly/4lUCUrx
Looking forward to your update.
Abhishek