Delay when breaking a block and animals

When I break a block or kill an animal its delaying to respond,animals freeze for a few seconds at a time,when near items on the ground i have to wait for a few seconds until they go in my inventory.
Here are links
https://www.youtube.com/watch?v=7ggelbzb1_U

https://www.youtube.com/watch?v=qkhaoCkeBnI