If I have a high combat does each individual PC get 80 XP if I have 4 players? Or 20 XP? What if I have 5 players and adjust the encounter to compensates? Do they now get 100 XP or still 20 XP?
Read playtest rulebook on page 339 ("XP Awards") and the Bestiary on page 21 ("Building Encounters"). Those two allowed me to understand this in my preparation.