This issue is happening to me too, the observers send out more than one pulse when detecting block updates. They also update out of sync as you can see in the video or redstone and observers just really lag out the game even on an iPad Pro.
Yeh the same thing is happening to me
Confirmed on IPad Pro 12.9', iOS 9.3.2 MCPE 0.15.9
Jake Erskine
This issue is happening to me too, the observers send out more than one pulse when detecting block updates. They also update out of sync as you can see in the video or redstone and observers just really lag out the game even on an iPad Pro.