It handled terribly when pushed (or sometimes even when not), it wasn't built particularly well, and it didn't have the speed consummate with the horsepower numbers Ferrari claimed it had. It was the reason Honda was so effectively able to kick in the teeth of the establishment in 1990, and no less that Montezemolo himself said the thing was terrible and trashed it at length (and has seemingly done so multiple times since) when he took control of the company. You could kill yourself just as easily in an early SW20 since it was barely any slower, but it wouldn't have cost you nearly as much for the pleasure.
You're pretty sure it isn't what the review from 2015 said it probably was?