Hi all,
I’m using Blender 2.79 coupled with UE4.20.3 .
You could import to UE4.17 or just model everything in 30 FPS and set in Blender to 30FPS, and then scale the animation in the Animation Pane in UE4.
You basically get the same effect. However, the change will only manifest itself in Game Mode. But you will double the speed of the animation if that’s what you’re after.