I recently canceled my subscription with Adobe. I was already pissed off by the instabilities you mentioned and some minor and major bugs that persisted in the programs, sometimes for over 10 years.
Though the one thing that finally made me cancel, was that I found out they overcharged me by ~240€ over the last 2 years. When I started studying 3 years ago, I got the student subscription. That thing was 20€ / month for the first year, then 30€. However, they lowered the price to 20€ quite a while back. Since I still had an "old subscription" they didn't bother telling me about the price drop and kept charging 30€ / month. Those are some seriously sketchy business practices - it's not like my old subscription was different in any way, it was just more expensive.
I complained about the matter and was told it's not their responsibility to inform me of price drops and I should've checked myself. Yes, thank you Adobe. You guys have fucked me over more than once… so I cancelled.
Edit: Here's a screenshots of the plans (compare first plan to last plan)