In the editor submarine gives 265 fps when off and 255 when on.
But in the company of mods and other people, the drop in fps works for the whole team. This is not about the computer.
Eats less fps when all players use Perfomance Fix. But still.

There are hefty regex components that poll the fuel and electrical panel status and send it out to various LEDs in the sub (ie. electrical panel status lights). I could possibly see that causing frame drops on a lower end system.

Strange. When the reactor is running on the machine - minus 40 fps. When the reactor is turned off - plus forty fpsu What?