Agreed. The originals are tightly written deadpan masterpieces. The 2016 film is an awkward mix of broad humor and just expecting the cast to randomly improv funny moments. Randomly improvising jokes can often yield some very funny results but I don't think it works when the expectations are this high.
It did respectably for a Paul Feig movie, though not as well as
Bridesmaids or
The Heat. I think the big problem was how much more expensive
Ghostbusters was compared to his other films. Had he been able to keep costs down, I think Sony would have ignored the fan backlash and gone ahead with a sequel to it anyway.
https://www.boxofficemojo.com/people/chart/?view=Director&id=paulfeig.htm