Conveyor shutoff startup is slow (specification?)

I may have misunderstood.
Slower may be the conveyor sensor response, not the conveyor shutoff activation.
This is a display issue and the actual cause may vary, but we will attach a reference image.
The version is AP-397241-D.

Edited February 29, 2020 by kbn

My own take on displaying how conveyor rail sensors differ to gas/liquid pipe sensors. The gif may not function properly until it loads fully.

The same properties apply whether your conveyor rail goes up, down, left, or right. 

My own uninformed explanation for this property is that the actual debris that gets read by the rail sensor and the packet or "container" for it are unsynced, and the debris lags behind the container. So if you were to put a rail sensor Right next to a shutoff/chute, the container would have already passed the chute by the time the debris is read by the element sensor.