Jamie and Claire Fraser have been through a lot. War, child loss, allegations of witchcraft, and, well, the time travel of it all. That’s nothing, though, compared to the daily battle their portrayers face just working alongside each other on “Outlander.” “It’s got worse, hasn’t it? Each season, it just gets more and more fractious,” Sam Heughan tells POPSUGAR. Echoes Caitriona Balfe, “It’s very difficult. Very difficult to work with this human. So high-maintenance.”
They’re joking, of…