how does bitcoin sustain fast energy flow ruthheasman

Big blocks principally! It's probably easier to talk about how BTC doesn't sustain fast flow of energy, e.g. small blocks lead to a full mempool, which increases transaction fees and slows transaction times, which discourages use and makes people resort to using other chains, lowering the value of the coin, which in turn removes hash power, increasing block times and raising transaction fees, frustrating the user even more, which is reflected in lower usage, and which may eventually lead to chain death as the difficulty adjustment window means that the block times lengthen and the next block just gets further and further away. Artificial throttling has bad outcomes.
Conversely, BitcoinSV has block sizes that increase in size to match demand, and transaction fees which lower the more data is stored and the more the network is used, which encourages more information and energy to be committed to the network, which encourages more use, which encourages more apps to be built utilizing the network, which attracts more miners, which builds greater density of connections, making the network more valuable, which supports more use cases and makes the on-chain data itself more valuable, etc. So the speed of energy flow through the system in many ways builds and constitutes the value and complexity of the system, and the (Proof of work) energy 'wastage' represents a smaller and smaller percentage of the energy that is stored in the system. A virtuous circle instead of a vicious one, as in BTC.

In Dr Ray Peat's bioenergetic view of biological systems, fast-flowing energy through the system (i.e. a fast metabolism) supports the high-energy demanding systems of repair and regeneration. So in his world view, fasting (limiting caloric intake) and breathless exercise lead to adaptive mechanisms, such as raising cortisol and adrenaline to compensate for low blood sugars, glycolytic energy production to keep up with energy demands, and hypothyroidism, which slows metabolic rate overall. Long-distance runners, for example, have slow heart rates but this represents a state of hypothyroidism, which means a slower metabolic rate. It is more desirable to have a high metabolic rate and no need for compensations and/or adaptations. The high rate of energy flow in a fast metabolism builds and repairs the structures of the body faster and with more complexity and without need for hormonal adaptations. Young, healthy people have fast metabolisms and a faster pulse. Slow metabolisms have to resort to more primitive methods of energy production, such as glycolysis and stress hormone use for homeostatic regulation. A high metabolism equates to high cellular complexity and function and higher function generally equates to health.