Hi kebert177,
Please tell us more about your problem, to help you.
Software version, network settings, number and type of NDI devices, resolution of cameras/show, settings of NDI Access Manager (receiving settings), ...
You get also jittery output if you have your SDI cam selected for program?
What means jittery? Hick ups or lower frame rate? Or do you see lower bandwidth on previews?
I would suggest, that it depends on
1.) either the network bandwidth or
2.) the network cable length (less than 25m)
3.) or the CAT standard of the LAN cable (at least CAT 6).
Best regards from Germany!
Chris