Sarc and meg tail swim animations dont work as expected, resulting unrealistic,loose,soft,flexible

Using my sarc and meg i noticed while swimming that their tails were not moving properly, in a really weird, strange, unsual way, not rappresenting real movements, but opposite, unrealistic ones, not the one expected by their normal swim animations. Tail will result loose, soft, flexible, moving in all directions while swimming

While swimming with my sarc and meg, i saw their respective tails moving in a weird, strange, unnatural way, with not usual and intended game movements. Tails will result loose, flexible, soft, moving more when you go left and right your dino, like if no bone to keep it straight

Sarc and meg tail swim animation movements should be the one created and intended by developers, moving in a realistic, real way and not resulting unrealistic, flexible, loose, soft.