Snaer had 14 points in the first half as the Seminoles (9-5) grabbed a 50-16 halftime lead. It was a stunning reversal of fortune for Florida State, which trailed by 17 points at the half in Friday's triple-overtime loss to Princeton.
Xavier Gibson also had 12 points, five rebounds and four blocks for the Seminoles, who scored a season-high 85 points.
Auburn led 5-4 in the opening minutes after a 3-pointer by Gabriel. But Florida State went on a 20-0 run -- including nine points from Snaer -- to build a 24-5 lead with 10:34 left in the first half.
The Tigers tried to make 3-pointers to close the gap but were just 1 of 9 in the first half and 4 of 14 for the game.
Florida State made 22 of 26 shots from the free-throw line. Miller was 5 of 6 from the line, and Gibson was also 4 of 4 from the line.
The Seminoles also showed off their height and athleticism inside, blocking 10 shots and outrebounding Auburn 45-30.
The Seminoles shot 53.7 percent (29 of 54) from the floor. The Tigers shot 32.3 percent (21 of 65).