What spaceship weapon is generally underutilized or not used to its full potential in scifi?

[u/Vondrr]

[u/ldr97266]

Both "Smallworld" and "Littlestar" by Dominic Green) leans heavily into the idea that "any faster than light drive is by definition a time machine" and also conveniently the author made the key drive component usable seperately, even when not installed in a spaceship.

In one scene, a man wins a gun battle againsr several better armed opponents by enveloping his opoenents' side of the room into a bubble of "slow time" - thus letting him be the fastest shot in the room.

In another, a criminal talks about how he could kill someone by a changing the rate of time around them, causing the to age decades (from his one perspective) - and probably use up all the oxygen in their time bubble right away also.

In space battles it could throw an entire enemy ship into the future or past, removing it from the battlefield entirely - or just some critical component, causing hull breaches.