There is a lot that goes into building a strong bench press. Outside of needing a baseline foundation of strength, you also need absolute precision when it comes to executing reps properly.
There are multiple ways you can improve a lagging bench press such as upping your training volume, using variations to strengthen weaknesses, and employing things like accommodating resistance (chains and bands). However, what if your bench press ins’t necessarily lagging and you just want to be more efficient with your training, what can you do? Insert: Inter-set work.