Dreamscape is yet another potboiler from the Hollywood SF factory.
Potboilers have an undeservedly bad reputation.
Sure, they're made exclusively to make money, but, when well done, they can give value for your admission price. I don't want to see Bergman, Kurosawa, and Renoir all the time. Dreamscape is a good enough film, and I doubt if anyone expected more from it. I wasn't disappointed. On the other hand, I also wasn't surprised.