Road Issues?

Hey guys, so I have the Race Course Pack from polypixel, and they provide a road mesh with it for use with splines. My problem is, after creating the splines, my car bumps really hard upon entering each segment of the spline. Is there a way to fix this? Here’s a video demoing what I’m talking about :

As listed in the description, I’ve tested with other meshes and I get the same issue, so I’m sure it has something to do with the way my splines are set up.

Here’s a top-down view of my spline setup: UE4 Help Pic Splines — ImgBB

it looks like a collision issue to me. does that cube in the video have anything to do with it? but yea def looks like a collision issue.

The cube is just there to mark where the collision occurs. It has nothing to do with the issue. I suspect it has something to do with the spline segment alignments…