when departing rwy 08 with the track deviation being always after you initiate the turn at 6.5 DME.
Tell your your pilots not to fly faster then clean speed before/during the turn then..
NCE billed us a ticket a few weeks back.
There are a few tricky parts in Nice,one being a radial not to overshoot,to avoid flying above rich dudes houses
Pilot prep is most probably at fault.
LNAV is only as good as the FMc inputs.....ie.if the turn is too wide,restrict the speed and voila....