@Rajdipta_De the reason for the extremely high rate of climb is that we will be taking off towards the west, which means we will fly directly over Monaco. There they prefer glamour over airplane engine noise :-).
The rate of climb is set by Sim Brief to adhere to their noise restrictions while maintaining safe flight so not to worry! You’ll want to use full take off thrust for this one though.
Once we hit FL130 the ascent profile becomes more friendly.