https://gyazo.com/a62062d8cefefedfb806f7b03fe3c0c7
is this a joint? a motor6d? i cant find it in a normal character
RotateP or AnimSave or Body colours. Just click it and it tells you. If its a RotateP and a Free model then it could be dodgy as RotateP in free models are often used as lag machines.