[GAMEPLAY] Caitlyn Attack Animation

When playing as Caitlyn I will notice sometimes that her damage is applied before she actually takes the shot. And in other cases, the damage doesn't apply even after taking the shot. This occurs mostly on minions. It makes last hitting somewhat troublesome. For example, when I shoot, the projectile leaves the gun and I begin to walk, the game treats it as an attack-cancellation. All other effects still trigger, sound effects, the minion lighting up from being selected, etc. but damage is not applied. On the reverse, where damage is applied prior to the animation, you can clearly see the damage amount pop-up before the projectile has even been fired. This is troublesome when you are waiting for that 1 minion shot to occur and their projectile should reach before yours, but you fire, your damage hits first and the minion gets the kill. Has anybody else noticed this? My FPS is at 130-145 when I play, and my pings are in the 90-100 area for latency so I don't believe it is a machine specific issue (graphics card, network card, internet, etc.)