Your experience is the opposite to the vast majority of others posting in this (admittedly biased topic) here: GPT 5 is really bad (at least in Cursor) - #54 by Thomas_McNeill
What language are you using?
What model are you comparing it against?
Are you a real person, or a bot - serious question - you’ve gushed about stuff while being extremely vague and selectively picking only positive highlights throughout … doesn’t seem entirely legit to me?