One Jump Too Many
Pilots like me jump into hyperspace every day. We take it for granted. We plot our course and with a surge of exotic energy tear a hole to the destination.
Without our neural implants we cannot perform the calculations quickly enough to perform the jumps. Even flight computers cannot calculate the permutations fast enough.
But brain and computer melded together can. But sometimes the connections break. And you don't know they've broken until you jump.
A hyperspace jump is instantaneous. That's not true, it takes nanoseconds. In hyperspace a nanosecond second lasts an eternity with a broken brain-computer connection.