If the Fusion Reactor is running purely on D-T Fuel (watercooled reactor), the Heat multiplier skyrockets in seconds to well above 200, meaning TR adjusts about every 2 seconds and the error rate goes from 0 to 100 in about 20 seconds. I have a computer regulating CR. this takes about 1 seconds to make a change to CR. In the time it takes the computer to make 2 adjustment the HM is above 200.
That means the TR changes while the computer is still trying to regulate CR to match the TR from last cycle.
I tried many different regulators from lazy to fast to agressive to moderate... but no luck.
if youre lucky the change in TR isnt actually catastrophic, but i had it go from TR 90 to TR 0.
water supply is infinite, D-T Fuel supply is about 1024mb/Tick.
Difficulty in the config is set to 1.