In this video, I will show you how to master SubUV Blending and Motion Vectors within Unreal Engine 5 Niagara System. This method allow you to slow down your flipbook animation without frame stepping, frames will interpolate from frame to frame without need of any additional frames. I will show it base on my flipbook I made in EmberGen, but you can use your own from any other program.
https://dev.epicgames.com/community/learning/tutorials/rv05/unreal-engine-fortnite-level-up-your-flipbooks-with-motion-vectors-and-subuv-blending-unreal-5-tutorial