my mincart jerks as it travels

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
Describe what happened here mincart was running smooth when last update was made the minecart now jerks as it moves with me in it. also rail
noise changes in some areas

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
to trigger bug just get in minecart
2. ...
3. ...