Apologies if this has been covered but I can't find it.
What are the bonuses in elite STF runs? I know they are there. For instance just did an infected run not during the bonus hour. We did accomplish the group bonus objective which is the 15 marks so the reward should be 75 and yet I had 115 marks rewarded. Bug, or other benchmarks I/the group are achieving?
There can be random bonus reward which is not tied to optional objectives or personal performance. Sometimes you just get some more marks or 6 or even 11 BNPs. There is no discernable pattern to it, as far as I can tell it's truly random.