Use controller rotation yaw on dedicated server issue

i want to check use controller rotation yaw. on not server, it is worked very well. but on dedicated server, when my character go to side or diagonal line, my character is trembling, i think that yaw value have problem,on dedicated server. how to solve that??? please help me. i am from korea, english is very hard ㅜㅜ

it is 4.15version thirdpersontemplate`s problem. i played basic thirdperson character