With the huge mass of Jupiter and its fast, approximately 10 hours daily rotation, there may be substantial twisting of space-time around it.
A distortion of such magnitude that may call for considering the effects of time dilation or twisting and smearing of the Time-space especially because of Juno's elongated orbit.
Is this still below the tolerance level of the mission or they have had to deal with it?
Today I found this article on Lense-Thirring effect on this subject which is really interesting! space-time frame dragging.
It is a bit involved mathematically but basically it says objects in orbit very near a large mass would be under a pseudo torsion opposite the orbit's direction and also the mass of orbiting object will increase if it rotates opposite the induced torsion and decreases if it rotates along the torsion. One way of describing the frame dragging is looking at it like a planetary gear box: the sun gear at the center rotating clockwise induces a torsion anti clock to planet gear and clockwise the ring gear]1