In these cases, I suggest you seek technical support. Does your hardware have the required features for new Adobe releases?
If the system you are using is Apple, you can see the performance distribution from the activity manager panel.
When working with Illustrator, do not use Chrome, Safari, etc. in the background as much as possible. You should close pages, applications.
If possible, a better option would be to see the problem in situ with a remote connection.
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