  In this paper we will describe two new optimisations implemented in
MadGraph5_aMC@NLO, both of which are designed to speed-up the computation of
leading-order processes (for any model). First we implement a new method to
evaluate the squared matrix element, dubbed helicity recycling, which results
in factor of two speed-up. Second, we have modified the multi-channel handling
of the phase-space integrator providing tremendous speed-up for VBF-like
processes (up to thousands times faster).
