Is 1 hour and 50 mins enough time to clear customs and check in for a domestic flight in J'burg airport?

My domestic flight has been brought forward half an hour and now I'm worried that I may not have enough time. Arriving on the Air France A380 and if that flight is full (i believe it can carry over 800 passengers!) clearing customs could be a struggle to make my connection. I have done this route several times and to be fair i've always cleared customs quite fast but never off an A380 or with such a tight connection time. Any thoughts would be welcomed. Thanks