In the States we got told (as in "do") ... "There's always time to do a full re-align - so do it." ... which is all well and good when you're on Ver 10+
Now operating on Ver 1.6 (so slow I can go to the fwd galley, make a coffee, come back and it's still computing performance) so Dom Joly's comment is sadly all too true, minutes become precious - and re-entering SIDs gets a little tedious
And hey - QAVION - some of us are still getting around in "hardballs" mate and I still haven't found a way to transfer RTE PLAN data to the WX radar
actually I'd probably have more success reading it in the coffee granules in my cup
We do a quickie just prior to pushback (to zero any errors from - particularly extended - gate time) and another at turnaround unless we're there for more than 30-40 minutes.