Steam Boiler works strange with Fluid Reactor

Minecraft 1.12.2

IC2 2.8.164

I don't know it's bug or not, but Steam Boiler sometimes (every ~20 seconds) for 1 tick stop producing steam when working with Fluid Reactor

Reactor setup

Steam Turbine

Steam Boiler GUI (I capture moment when this happens)

Quote from Doctor Weird

Have no time to check the planner, but are you sure the reactor is supplying enough hot coolant to keep the steam reactor running nonstop?

Yes. Reactor produces 200 HU/t for 2 Liquid Heat Exchangers (100 HU/t each)

erp=AudaVNFQXmRxXiIwJO5ntSATG23gfvZbdN2uTTSCwVJ+yNBkeArmGe9T7AE=

Moreover, this problem occurs even when reactor produce more heat than Heat Exchangers may consume

Quote from KrisBigK

What direction did you built this in?

North (if I properly understand this question)

Quote from KrisBigK

Did this affect the EU output?

Yes