@Nerts The last piece of spacefaring sci-fi I wrote had FTL vehicles but the munitions, due to some technical limitation, could only do sublight for some reason.
So a lot of combat in that universe was some Das Boot Hunt For Red October shit where they'd let munitions fly, and then there'd be like, an hour or more where they just sit and watch the missiles go (b/c they were slow enough to track in realtime) and do absolutely nothing about them until like, the literal last possible minute.