Hi PJ. Your point is?
It's becoming popular for people, who play computer games online, to stream the game so that others can watch it.
However, the advice about the need for a high-spec PC is somewhat redundant since an online game player wouldn't be playing computer games without a high-spec PC.
Google's Stadia, amongst others, provides a streaming facility for PC game players.
Dual PC streaming is where two computers are combined so that one computer is used to play the game & the second computer is used for the streaming.
Occasionally there'll be a news clip where some gamer has died after doing something moronic such as a lengthy non-stop gaming session.
https://dailym.ai/35IuoVL