Maybe this isn't a minor detail, it's more of a big one, but I've got it on the brain recently because it's what I've been playing...
Terrible animations.
Specifically what I've been playing recently, the "animated" in-engine cutscenes of Tales of Symphonia and Abyss. And from looking online, it doesn't seem to be much better in later Tales games either.
I know, it's an RPG, it's supposed to be about the story and the characters and the leveling and equipment and skills and such. But geez, they are just the worst. Every animation is very clearly not mocapped, and instead hand created by a first year animation student. Every movement is "take these polygons here, move them over here at a constant rate, then stop moving." Over and over for every part of the body, or anything flying through the air, every action scene, everything.