Everynone
                (Everynone)
              
                
              
                  
                  
              6
              
             
            
              This is for camera rotation blending when the PC switches targets, it has nothing to do with player rotation.
Rotation rate is governed by the character movement component:
Admittedly, it may not be smooth enough for some or you may want custom settings. Check this out, see if it helps: