User blog comment:ChishioKunrin/Volume 3 Episode 3 Sneak Peek/@comment-5426254-20151108005442/@comment-26403517-20151108014129

I'm pretty sure the fights looked choppy in the trailer because they were sped up, via dropped frames. The short clips of the fight shown in this preview looked to be a normal speed (by RWBY standards anyway), and much smoother.