It's a problem that we have noted in the US with the Airbus avionics. The smoothing sometimes has rather large lead turns which takes the aircraft outside of protected airspace, both for conventional separation, as well as terrain separation... Not a good thing. It also sometimes raises a surprise if you are expecting someone to go over the navaid for spacing and then they turn 9 or 10 miles early (big turn) and instead of going in trail with a sequence go side by side... Has caused more than one error here...
regards