For you to have a better visualization of this issue, please create a new ThirdPersonCharacter Template project and add this to the ThirdPersonCharacter_BP:
Then create a new Actor Blueprint, add a Spline as root component and add this:
Now switch Point Index 0 X,Z locations from -10,000,000u to -1,000,000u to -100,00u, you’ll notice this stutter. How could we go around this?