"Meltdown" had some terrific character moments but the threats to the facility, be it from the mutants, the confused soldiers, or the overloading machine, never felt very urgent. The facility wasn't going to explode and Ramse and Cole weren't going to be killed by time zombies. And being in the facility almost the entire hour was quite claustrophobic. Sometimes a show has to devote an episode to moving characters around on the board, and even done well it can feel a little contrived. Now that Sam is where he needs to be (and always was?) and the machine is fixed, we can back to more trippy time travel trips.