You might enjoy honor Harrington by David Weber. There is FTL, but it still takes significant time to get anywhere, and that plays a big role in the story. Comm

You might enjoy honor Harrington by David Weber. There is FTL, but it still takes significant time to get anywhere, and that plays a big role in the story. Communication also takes as long as ships would take, so it's not instantaneous either. The physics of space and space travel also play a role in combat. https://www.baen.com/on-basilisk-station.html https://www.baen.com/on-basilisk-station.html