Animation Blueprint with IK has latency of 1 frame compared to rest of scene

No it does not. That’s how I detected it in the first place: I have attached the motioncontroller mesh to the motioncontroller component, and it moves ahead of the IK update. Also I attach objects that I would like to grab to it, and they move ahead by a frame as well. Please see my video I posted in comment above: [][1]

[1]: