I will provide an honest answer. I trust this will be appreciated. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.
as I am sure you can appreciate it can be very difficult to diagnose a judder which one cannot experience first hand.
if the engine is hiccuping as you've described, there are many possible causes.
the most common would be a problem with fuel deliver (pump or filter issue), an air leak, a failed crankcase vent valve, failinng throttle or failed airflow sensor
however, a judder can also be from the suspension due to worn components, from a wheel bearing, from an output shaft, a differential or from the transfer case
I would advise that the vehicle be raised on a hoise for an inspection of all driveline and suspensioin components, and also that real time diagnostics be carried out where all inputs and outputs from the engine management system can be monitored in real time, and a possible faulty reading be called out in the live data stream
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.