I’m having the same problem!
The text inserted from the premiere it self becomes pixelated,
and even credits, don’t come up smooth, they are sort of jitter.
When a footage position is movie,
from Position 360.0 – 288.0
to example 360.0 – 289.0
exactly after rendering the sharpness is lost.
I tried
the field options but nothing change
even the render optimize for (performance or memory)
but nothing solved the problem.
(I don’t know wheter you understand me by the following,
but when I render, the total image, get sort of another faded layer beneath it to its left – this makes the footage seems blurry)