Boyle set personal bests and national records in the 800m and non-Olympic 1500m events and got within 0.26s in the 400m. Gold medallist Katie Ledecky broke Rebecca Adlington's world record in the 800m final, holding off Lotte Friis. Ledecky also set a world record in the 1500m. In the 400m, Boyle held off Camille Muffat, the Olympic gold medallist. Boyle said contrary to the trend for fields to weaken in post-Olympic year, she felt hers had improved.
"That makes me happier because it means they're stronger results than they appear."
Boyle said the high performance environment within SNZ, where they went for an eight-week build-up camp in Spain initiated by new high performance director (and Spaniard) Luis Villanueva, had been good. It had allowed her to go into the event fresh but settled.
The results have spurred Boyle on to contest the Rio de Janeiro Olympics despite the fact she will be 28, which is getting on in swimming terms. Her next focus will be the Commonwealth Games.
After the 400m freestyle bronze, SNZ chief executive Christian Renford acknowledged Boyle's place in their programme.
"Lauren is vital, the jewel in the crown," Renford said. "She's a wonderful ambassador for our sport and if we continue to produce people like her we will be in good stead. But it's unfair to rely solely on her.
"We need to show it's not good enough to simply qualify for the Olympic Games or world championships. You have to perform on that world stage. [A lack of] money also can't be used an excuse."