Seeing as you unlock extreme torque after regular torque, you can't use the extreme heat exchanger at maximum capacity as soon as you unlock it, so I was wondering if you could add a 750° heat exchanger to bridge that gap.
I tend to run steam converters directly into turbines. I have noticed that while the torque turbines are running, the steam turbines are not when the power grid is not running at maximum capacity, which then causes the steam converters not to run since they are backed up on steam, which does fix itself when the torque turbines run out of torque and the steam turbines kick in. Problem is, the steam turbines produce way less power than the torque turbines, so I have short spells of low power.