The above graph was generated from am emulated environment which was completely **synchronous**. I converted it to **asynchronous** and broadcast in non-blocking mode. And here I get the result.
Based on this diagram we can see around **25%** of the network missed the broadcast on 25 broadcast limit and 2 relay limit.
I suggest to change these values to either **(40, 2)** or **(20, 3)** for **250** node network.