unity cant run my movement code smoothly

Hi guys I use below code for moving a prefab , but it doesn't move the prefab smoothly , I thought that maybe its too heavy for my i5 cpu to calculate q points , so this is the reason for step to step movement ( in a frame my prefab stops for a while and then jumps some steps …) But when I looked at the frame rate It wan on 70 and more , the game runs with 15 draw calls 7 mb for pictures , this is a 2d game Would anyone tell me whats happening that my computer cant do this in a smooth way….and not Hi guys I use this code for moving a prefab , but it doesn’t move the prefab smoothly , I thoought that maybe its too heavy for my i5 cpu to calculate q points , so this is the reason for step to step movement ( in a frame my prefab stops for a while and then jumps some steps …) But when I looked at the fram rate It wan on 70 and more , the game runs with 15 draw calls 7 mb for pictures , this is a 2d game Would anyone tell me whats happening that my computer cant do this in a smooth way and not Interrupted , Thanx a lot and more This is my code

 function Update ()
 {
     if (c <=5)
     {
 c += 0.83 * Time.deltaTime; 
 q1 = CalculateSlowTankBombBezierPoint(c, FixStartSmoothMovement, EndPointForSmoothMovement);
 q0 = q1;
 transform.position = q1 ;
     }
 }
 
 function CalculateSlowTankBombBezierPoint(t : float , P0 : Vector3 , P1 : Vector3):Vector3
 {
     var u : float ;
     var p : Vector3 ;
     u = 1 - t ;
     p= u * P0 ;
     p += t * P1 ;
     return p ;
 }