Did anyone else struggle with dex weapons, specifically the rapiers?

Normal enemies, good, fine. The weapon works a treat with it's thrusting strong attacks... but when it comes to bosses, they move so fast and the hitboxes seem so jank that the majority of my attacks completely and utterly miss the mark. Leading me to just be hit by some other attack the enemy has. Not to mention, there is no "stun" for rapiers when it comes to bosses. Rogiers Rapier that came with Phalanx has been the only way I have found how to consistently stun bosses and other bigger enemies, but even then... the cast time and none-stop dodging to be able to get them out is a "mess up once and you die" scenario each time.

Like, am I alone in this or have other people struggled similarly with builds like this?