Making Cinemachine tilt upwards/downwards when walking on a slope.

So I have a camera that follows the player character and I want it to tilt slightly up/down when walking on slopes. As to give the player a better overview when moving around. I have tried making a CinemachineCore.AxisInputDelegate to give this effect. However, my code makes the camera shake weirdly up and down even on an even surface. It sometimes produces the desired effect when walking up/down but it seems random. I am new to using Cinemachine so I don't know if I have just misunderstood how to use this or what. I hope someone is able to help me. Here is my code:

Code (CSharp):

1. public class CamTilter : MonoBehaviour {
2.  
3.     [SerializeField]
4.     private Transform startPoint;
5.     [SerializeField, Tooltip("How much slope is needed before cam tilting sets in (in degrees)")]
6.     private float deviation = 10f;
7.     private RaycastHit hit;
8.     private const float RIGHTANGLEINDEGREES = 90f;
9.     private float tiltMultiplier = 0.1f;
10.  
11.     // Use this for initialization
12.     void Start() {
13.         CinemachineCore.GetInputAxis = InputDelegate;
14.     }
15.  
16.     // Update is called once per frame
17.     void Update() {
18.         Physics.Raycast(startPoint.position, Vector3.down, out hit);
19.     }
20.  
21.     float InputDelegate(string axisName) {
22.         if(axisName.Equals("Mouse Y")) {
23.             float angle = Vector3.SignedAngle(startPoint.position, hit.normal, Vector3.up);
24.             angle = Mathf.Abs(angle);
25.             if(Mathf.Abs(RIGHTANGLEINDEGREES - angle) < deviation) {
26.                 return 0f;
27.             }
28.  
29.             return (RIGHTANGLEINDEGREES - angle) * tiltMultiplier;
30.         }
31.         return 0f;
32.     }
33.  
34. }