Chogath Q Hitbox doesn't match its effect

Maybe it's just me, but I feel that whenever I play Chogath his Q is just slightly smaller than the hitbox you see. It just feels really bad gameplay wise when I feel like I caught someone at the edge of my Q and then they just get to walk off while the thorns still look like they're going through them. Has anyone else noticed this? I also feel like his W has the same problem, with the scream looking longer than it really is, but that's harder to judge so I'm ok with it. The Q not matching up just feels wacky and bad though.