Object keeps bobbing between two tiles

I'm trying to make a tower defense game where you only have a set amount of towers, meaning there is no buying and selling towers, and on of the core pieces of the game is being able to move your tower. although whenever I go to move my tower, on sperate frames the tower keeps moving between two positions (grid tiles), even when i'm not moving

• Only GetTower() and FiveFrameUpdate() are relevant to the tower moving

• Player has several static arrays with stats, and position

• LevelController has a list of spots where a tower is placeable

.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class InputController : MonoBehaviour {
 
     public static int tabViewType = 1; // 0 = none, 1 = compact, 2 = full
 
     public GameObject eKeycap; // 0 = e, 1 = 1, 2 = 2, 3 = 3, 4 = 4
     public GameObject interactText;
     public bool eActive;
     public static int eIndex;
 
     [SerializeField]
     private GameObject towerMenuGO;
     private TowerMenu towerMenu;
 
     [SerializeField]
     private GameObject levelControllerGO;
     private LevelController levelController;
 
     private Tower towerScript;
     public bool moveActive;
 
     void Awake() {
         towerMenu = towerMenuGO.GetComponent<TowerMenu>();
         levelController = levelControllerGO.GetComponent<LevelController>();
     }
     
     // Start is called before the first frame update
     void Start() {
         InvokeRepeating("FiveFrameUpdate", 0f, 0.2f);
     }
 
     // Update is called once per frame
     void Update() {
         if(Input.GetKeyDown(KeyCode.Tab)) {
             switch(tabViewType) {
                 case 0:
                     tabViewType++;
                     break;
                 case 1:
                     tabViewType++;
                     break;
                 case 2:
                     tabViewType = 0;
                     break;
                 default:
                     tabViewType = 0;
                     break;
             }
         }
 
         if(Input.GetKeyDown(KeyCode.E) && TowerMenu.active) {
             towerMenu.DeactivateMenu();
         } else if(Input.GetKeyDown(KeyCode.E) && eActive) {
             towerMenu.ActivateMenu(eIndex);
         }
 
         if(Input.GetKeyUp("1") && TowerMenu.towerMenuActive) {
             towerMenu.ToUpgradeMenu();
         } else if(Input.GetKeyUp("2") && TowerMenu.towerMenuActive && !moveActive) {
             moveActive = true;
             GetTower(eIndex);
         }
 
         if(Input.GetKeyDown("2") && moveActive) {
             moveActive = false;
             Player.updateSortingLayer = 2;
         }
 
         if(Input.GetKeyDown("1") && TowerMenu.upgradeMenuActive) {
             towerMenu.UpgradeTower(0, eIndex); // damage
         } else if(Input.GetKeyDown("2") && TowerMenu.upgradeMenuActive) {
             towerMenu.UpgradeTower(1, eIndex); // attack speed
         } else if(Input.GetKeyDown("3") && TowerMenu.upgradeMenuActive) {
             towerMenu.UpgradeTower(2, eIndex); // range
         } else if(Input.GetKeyDown("4") && TowerMenu.upgradeMenuActive) {
             // towerMenu.UpgradeTower(3, eIndex); // ability
         }
     }
 
     public void ShowKeycap(int index) {
         float offsetX = 0;
         float offsetY = 0;
         
         eActive = true;
         eIndex = index;
 
         // the reason it wasn't working was because on each of the 5 tower gameObjects each had a tower script attached and
         // the tower that you were close to was calling ShowKeycap(), but the other 4 towers were calling HideKeycap(), which
         // was why the position was changing but the keycap wasn't showing, same with TowerRadius
         eKeycap.SetActive(true);
 
         if(Tower.pos[index].x > 0) {
             offsetX = -1f;
         } else if(Tower.pos[index].x < 0) {
             offsetX = 1f;
         }
 
         eKeycap.transform.position = new Vector3(Tower.pos[index].x + offsetX, Tower.pos[index].y + offsetY, 0);
         interactText.transform.position = new Vector3(eKeycap.transform.position.x, eKeycap.transform.position.y - 0.75f, 0f);
     }
 
     public void HideKeycap(int index) {
         if(index == eIndex) {
             eKeycap.SetActive(false);
             eActive = false;
             towerMenu.DeactivateMenu();
         } else {
             return;
         }
     }
 
     void GetTower(int index) {
         string tag = "Tower" + index;
         GameObject towerGO = GameObject.FindGameObjectWithTag(tag);
         towerScript = towerGO.GetComponent<Tower>();
         
         Player.updateSortingLayer = 0;
     }
 
     void FiveFrameUpdate() {
         if(moveActive) {
             towerMenu.DeactivateMenu();
 
             float currentSpot;
             float closestSpot = Mathf.Infinity;
             Vector3 closestVector = new Vector3(0f, 0f, 0f);
             Vector3 finalVector = new Vector3(0f, 0f, 0f);
             bool onTower;
 
             // bobs up and down, throughout different frames
 
             for(int i = 0; i < levelController.spots.Length; i++) {
                 onTower = false;
                 currentSpot = Vector3.Distance(Player.pos, levelController.spots[i].position);
                 if(currentSpot <= closestSpot) {
                     closestVector = levelController.spots[i].position;
                     for(int j = 0; j < 10; j++) {
                         if(closestVector == Tower.pos[j]) {
                             onTower = true;
                             j = 10;
                         } else {
                             onTower = false;
                         }
                     }
 
                     if(!onTower) {
                         finalVector = levelController.spots[i].position;
                     }
 
                     closestSpot = currentSpot;
                 }
             }
 
             towerScript.transform.position = finalVector;
         }
     }
 }

Sorry for posting the entire file, it was extremely painful only trying to seperate the important parts