When the number of people increase and they have insufficient place to live in that area cause overpopulation and become a crowdy place. We can also define in terms of that if there are too many people for the environment to sustain (with food, drinkable water, breathable air, etc.) There are many disadvantage of overpopulation if the human beings haven't any proper management of resources, like sickness and spreading of diseases, lack of facilities , problem of starvation, poverty etc. If any place where people have proper arrangement and fully facilitated like in china then it is not a big problem other wise very destructive in term of poverty as well as human being.
High Performance Blockchain
The High-Performance Blockchain (HPB) project seeks to address the problem of scalability from both the software and hardware aspect of things. HPB combines a customized hardware Blockchain Offload Engine (BOE) with high-performance blockchain software. The addition of a hardware-based BOE, allows for high transaction speed and extremely low latency. The team claims that 'there is no compromise in terms of security and decentralization, as the Node network verifies transactions worldwide and is comprised of a dual election mechanism combining the best aspects of voting and delegation'.