That’s what happens when your computer designers seem to have a microtape loose, and decide that connecting the multi-exawatt power system directly to all the powered systems is a good idea.

Prssumably the same people who build a malevolent AI that takes over the ship every few decades, or makes it so that starships explode if they bonk into anything hard enough.

But they were restricted to Warp 5 after the revelation, with exception for emergencies, so presumably there was measurable impact past that.