3D HUD rendering weird when character moves even with motion blur turned off...

I selected my post process and checked motion blur and set it to 0. That got rid of motion blur but it’s still rendering rather “jittery” when the character moves… but the FPS arms don’t and both models have the camera as their parent so how are they different?

Try to disable temporal AA or swap to another Anti-Aliasing type. Temporal AA has noticeable ghosting across frames that is much more apparent with high contract (light foreground on dark background).