Isometric camera breaks player rotation script?

Hello all.

To put it simply, this camera script prevents a character rotation script from working despite it working perfectly otherwise.

    local plr = game:GetService("Players").LocalPlayer
    local RS = game:GetService("RunService") 
    local Camera = workspace.CurrentCamera
    Camera.CameraType = Enum.CameraType.Scriptable
    local zoom = 2000 --Distance between cam and character
    local fov = 1 --Field of view   

    local function Isometric()
        local character = plr.Character or plr.CharacterAdded:wait()
        Camera.FieldOfView = fov
        if character and character:FindFirstChild("Head") then
                Camera.CFrame = CFrame.new(Vector3.new(character.Head.Position.X+zoom*0.8
                                                      ,character.Head.Position.Y+zoom/1.4
                                                      ,character.Head.Position.Z+zoom*1.2)
                                                      ,character.Head.Position)
        end
    end

    RS:BindToRenderStep("Camera",Enum.RenderPriority.Camera.Value,Isometric)    

I do not understand why it prevents this script from functioning properly.

    --// Local Variables
    local Player = game:GetService("Players").LocalPlayer
    local Character = script.Parent
    local Humanoid = Character:WaitForChild("Humanoid")
    Humanoid.AutoRotate = false
    Humanoid:SetStateEnabled("RunningNoPhysics",false)
    local Mouse = Player:GetMouse()
    local Head = Character:WaitForChild("Head")
    local RootPart = Character:WaitForChild("HumanoidRootPart")

    --// Services
    local HB = game:GetService("RunService").Heartbeat

    --// Attachments
    local AttachmentPart = Instance.new("Part")
    AttachmentPart.Transparency = 0
    AttachmentPart.Position = Vector3.new(0,75,0)
    AttachmentPart.CanCollide = false
    AttachmentPart.Anchored = true
    AttachmentPart.Shape = Enum.PartType.Ball
    AttachmentPart.Size = Vector3.new(1,1,1)
    AttachmentPart.FrontSurface = Enum.SurfaceType.Hinge
    AttachmentPart.Name = Player.Name.."AttachmentPart"
    AttachmentPart.Parent = Character

    local Attachment0 = Instance.new("Attachment")
    Attachment0.Name = "RA0"
    Attachment0.Parent = RootPart
    local Attachment1 = Instance.new("Attachment")
    Attachment1.Name = "RA1"
    Attachment1.Parent = RootPart
    local AlignOrientation  = Instance.new("AlignOrientation")
    AlignOrientation.Attachment0 = Attachment0
    AlignOrientation.Attachment1 = Attachment1
    AlignOrientation.RigidityEnabled = true
    AlignOrientation.Parent = RootPart

    --// Code
    while HB:wait() and RootPart and AttachmentPart do
        local OriginPos = RootPart.Position
        local TargetPos = Mouse.Hit.p
        local TargetCF = CFrame.new(OriginPos,TargetPos)
        local x,y,z,R00,R01,R02,R10,R11,R12,R20,R21,R22 = TargetCF:components()
        local FinalCF = CFrame.Angles(0,math.atan2(R02,R22),0)
        AttachmentPart.CFrame = FinalCF 
    end

Please, could someone lend a hand? :)

I apologize for having a surprising amount of code, I believed it was a necessity to include everything and will gladly repost with simplified code if needed.

EDIT: To elaborate, while the player rotation script actually works, the character can only shake while being forced to look in one direction.