Richard III. That is quite interesting, I didn't realise that the 787 was quite so limited. The same rules apply though, i.e. being able to achieve that 2.4% in the 2nd segment. If you are
consistently not achieving that (especially in the sim with a very predictable environmental model) then I would be concerned. I assume that you have rotated at the correct rate and are achieving V2 to V2+15Kts? I note that you are using assumed and derated thrust. You may start running into directional control issues if you increase thrust beyond the derate limit.
Maybe a question for your performance/tech department?