UE5 - Laggy Stuttering Render with Camera on Spring arm.

Hello,

I am having trouble with my output using a Camera attached to a Spring Arm.

The purpose of this was to smooth out the raw capture from using an iphone as a virtual camera.

I created a rig with a Null actor with a spring arm attached to it and a camera attached to that.
I copied the keyed frames from the virtual camera recording onto the null and threw it in the sequencer to render.
Playing the Sequencer in real time my camera movements are nice and smooth.

On output I had differing results with Movie Render Queue and Legacy Render.

Movie Render Queue: The Camera gets left behind as the null with the spring arm plays though the sequence. By the time the sequence ends the camera has barely gone through the motions of sequence and ends up rendering a bunch of blurry stuttery frames as it tries to catch up to the Null.

Legacy Render: The camera manages to keep up and follow the Null, the problem being its like each frame is being interpolated without thought of the previous frame so it’s like it was captured in an earthquake jumping and stuttering vigorously.

This probably isn’t the best way to be capturing but I used this method in previous versions of unreal (4.27) with no problem.
If anyone has any solutions for capture or alternate ways to be smoothing out virtual camera capture post capture that would be greatly appreciated.

Thanks.