So, I tried disconnecting my OnKeyPress Function, and stopping the player from sprinting?

So, I tried disconnecting my OnKeyPress Function, and stopping the player from sprinting. A bigger problem them comes into the script. My roblox studio freezes for like 10 seconds after undoing the sprint. I know why, I just don't know how to fix it

error:

https://imgur.com/a/6ow6MU7

Script:

-- Services
local runService = game:GetService("RunService")

local tweenService = game:GetService("TweenService")
local playersService = game:GetService("Players")

-- Variables
local player = playersService.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid")

local camera = workspace.CurrentCamera

-- Settings
local normalSpeed = 16
local sprintSpeed = 26

local normalFov = 70
local sprintFov = 80

-- Boolean
local running = script:WaitForChild("Running")

-- Animation
local animation = script:WaitForChild("SprintAnim")
local sprintTrack = humanoid:LoadAnimation(animation)

-- Connections
local inputBeganConnection
local inputEndedConnection

-- // Functions

-- Camera tweening handler
local tween_fov = function(duration, value)
    local fov_tween = tweenService:Create(camera, TweenInfo.new(duration, Enum.EasingStyle.Quad, Enum.EasingDirection.InOut), {FieldOfView = value})
    fov_tween:Play()
    return fov_tween
end

-- Input controller
function onKeyPress(actionName, userInputState, inputObject)
    if userInputState == Enum.UserInputState.Begin then
        if humanoid.MoveDirection.Magnitude <= 0 then
                    running.Value = true

                    humanoid.WalkSpeed = sprintSpeed
                else
                    running.Value = true

                    humanoid.WalkSpeed = sprintSpeed
                    sprintTrack:Play(0.25)
                end
            end



    if userInputState == Enum.UserInputState.End then   
                running.Value = false
                humanoid.WalkSpeed = normalSpeed
                sprintTrack:Stop(0.25)
        onKeyPress(actionName, userInputState, inputObject):Disconnect()
end
end




-- Field of view controller
running.Changed:Connect(function()
    if running.Value then
        tween_fov(0.5, sprintFov)
    elseif not running.Value then
        tween_fov(0.5, normalFov)
    end
end)

-- Main loop controller
runService.RenderStepped:Connect(function()
    if running.Value then
        -- Check if player is moving
        if humanoid.MoveDirection.Magnitude <= 0 then
            if sprintTrack.IsPlaying then
                sprintTrack:Stop(0.25)
            end
        elseif humanoid.MoveDirection.Magnitude > 0 then
            if not sprintTrack.IsPlaying then
                sprintTrack:Play(0.25)
            end
        end

        -- Check if player is jumping
        if humanoid.FloorMaterial == Enum.Material.Air then
            if sprintTrack.IsPlaying then
                sprintTrack:Stop(0.1)
            end
        elseif humanoid.FloorMaterial ~= Enum.Material.Air and humanoid.MoveDirection.Magnitude > 0 then
            if not sprintTrack.IsPlaying then
                sprintTrack:Play(0.25)
            end
        end
    end
end)

game.ContextActionService:BindAction("keyPressSpecialName", onKeyPress, true, Enum.KeyCode.C)
game.ContextActionService:SetPosition("keyPressSpecialName", UDim2.new(.5,0,-.5,0))
game.ContextActionService:SetImage("keyPressSpecialName", "rbxassetid://73737626")