As far as I understand, the inertia is meant to only be active when the character is sprinting, to reduce zigzagging in firefights etc, however after you begin a sprint and enable the inertia, it will continue to affect the character even after the sprint ends and you have returned to jogging.
The inertia will only deactivate for jogging if you let go of all movement keys and begin a new input.
This makes movement feel clunkier than it should, for example when trying to casually jog through a doorway, turning the corner can feel bad because the inertia is active when it shouldn't be.