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Animation jumping off original path on import.

My question's regarding animation and what's happening to the fbx file when I import it into UE4. I've animated a set of tank treads that follow a spline based upon an IK Solver. Each tread is it's own object each with their corresponding bone. The animation works fine in 3DS Max but when I export it to UE4 the animation plays, but there's some major artifacts. The animation jumps all over the place and flickers going off of it's original path.

I'm fairly new to UE4 and animation, this is my first attempt at animation so I'm not particular well verse in a lot of the jargon or methods. However I'd appreciate any input that could be provided.

alt text This is what the treads look like within 3DS Max, no artifacts, and animation plays as intended. ^^^

alt text These are the exporting options I choose for the FBX, not completely sure if I'm missing something here. ^^^

alt text

These are the importing options in UE4. ^^^

alt text

This is what the animation looks like when it plays in UE4, jumping off it's path and flickering. My "bone_one", or I believe root bone as it's referred to(?) Seems to be jumping around the most and the other behind it get off tract due to it, however the last 7-10 treads are fairly constant and pretty much follow the path as needed.

Product Version: UE 4.9
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asked Oct 21 '15 at 08:37 PM in Everything Else

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