Filtering enabled bug that stops fire and player flying, or am I doing something wrong?

Every single time I use anything with BodyForce or BodyVelocity (Filtering Enabled) there is ALWAYS the same type of bug. The Output and Console says there is no errors.

Right now I'm making flying

Local Script in Player Backpack

workspace.General.Cooldown.Create:FireServer()
workspace.General.ClickDetector.Clicker:FireServer()
UserInput = game:GetService("UserInputService")
workspace:WaitForChild(game.Players.LocalPlayer.Name)
UserInput.InputBegan:connect(function(Input)
	if Input.KeyCode == Enum.KeyCode.LeftAlt or Input.KeyCode == Enum.KeyCode.RightAlt then
		workspace.General.Fly.Up:FireServer()
	end
end)
UserInput.InputEnded:connect(function(Input)
	if Input.KeyCode == Enum.KeyCode.LeftAlt or Input.KeyCode == Enum.KeyCode.RightAlt then
		workspace.General.Fly.Stop:FireServer()
	end
end)
Mouse = game.Players.LocalPlayer:GetMouse()
Mouse.Button1Down:connect(function()
	if game.Players.LocalPlayer.Character.UpperTorso:FindFirstChild("Fly") ~= nil then
		workspace.General.Fly.Move:FireServer()
	end
end)
Mouse.Button1Up:connect(function()
	if game.Players.LocalPlayer.Character.UpperTorso:FindFirstChild("Fly") ~= nil then
		workspace.General.Fly.Stop:FireServer()
	end
end)
UserInput.InputBegan:connect(function(Input)
	if Input.KeyCode == Enum.KeyCode.LeftShift or Input.KeyCode == Enum.KeyCode.RightShift then
		workspace.General.Fly.Fast:FireServer()
	end
end)
UserInput.InputEnded:connect(function(Input)
	if Input.KeyCode == Enum.KeyCode.LeftShift or Input.KeyCode == Enum.KeyCode.RightShift then
		workspace.General.Fly.Slow:FireServer()
	end
end)
UserInput.InputBegan:connect(function(Input)
	if game.Players.LocalPlayer.Character.UpperTorso:FindFirstChild("Fly") ~= nil then
		if Input.KeyCode == Enum.KeyCode.Space then
			workspace.General.Fly.Down:FireServer()
		end
	end
end)
UserInput.InputEnded:connect(function(Input)
	if Input.KeyCode == Enum.KeyCode.Space then
		if game.Players.LocalPlayer.Character.UpperTorso:FindFirstChild("Fly") ~= nil then
			workspace.General.Fly.Stop:FireServer()
		end
	end
end)
game.Players.LocalPlayer.Character.UpperTorso.ChildRemoved:connect(function(Part)
	if Part.Name == "Fly" then
		workspace.General.Fly.StopScript.Stop:FireServer()
	end
end)
function FloatU()
	workspace.General.Fly.Up:FireServer()
end
function Stop()
	if game.Players.LocalPlayer.Character.UpperTorso:FindFirstChild("Fly") ~= nil then
		workspace.General.Fly.Stop:FireServer()
	end
end
function FloatD()
	if game.Players.LocalPlayer.Character.UpperTorso:FindFirstChild("Fly") ~= nil then
		workspace.General.Fly.Down:FireServer()
	end
end
ContextAction = game:GetService("ContextActionService")
local FloatUp = ContextAction:BindAction("FloatUp", FloatU, true)
ContextAction:SetPosition("FloatUp", UDim2.new(1, -50, 0.1, -100))
ContextAction:SetImage("FloatUp", "rbxassetid://1533231301")
local FloatStop = ContextAction:BindAction("FloatStop", Stop, true)
ContextAction:SetPosition("FloatStop", UDim2.new(1, -50, 0.1, -50))
ContextAction:SetImage("FloatStop", "rbxgameasset://Images/Stop")
local FloatDown = ContextAction:BindAction("FloatDown", FloatD, true)
ContextAction:SetPosition("FloatDown", UDim2.new(1, -50, 0.1, 0))
ContextAction:SetImage("FloatDown", "rbxassetid://1535168213")

Script in Workspace > General named Fly:

--[==[ ({ Float Up } ) ]==]--
local Speed = 5
local Idle = false
script.Up.OnServerEvent:connect(function(Client)
	local Char = Client.Character
	if Client.Backpack.Element.Value == "Fire" then
		if Char.UpperTorso:FindFirstChild("Fire") == nil then
			local Flame = workspace.Fire.FireBall["Fire Volley"].Fire:Clone()
			Flame.Parent = Char.UpperTorso
		end
	end
	for i, v in pairs(Char.Humanoid:GetPlayingAnimationTracks()) do
		v:Stop()
	end
	Char.Animate.Disabled = true
	local Anim = Char.Humanoid:LoadAnimation(script.UpAnim)
	Anim:Play()
	Idle = true
	if not Char.UpperTorso:FindFirstChild("Fly") then
		local Fly = Instance.new("BodyVelocity", Char.UpperTorso)
		Fly.Name = "Fly"
		Fly.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
		Fly.Velocity = Vector3.new(0, Speed, 0)
	elseif Char.UpperTorso:FindFirstChild("Fly") then
		local Fly = Char.UpperTorso.Fly
		Fly.Velocity = Vector3.new(0, Speed, 0)
	end
end)
--[==[ ({ Down }) ]==]--
script.Down.OnServerEvent:connect(function(Client)
	local Char = Client.Character
	for i, v in pairs(Char.Humanoid:GetPlayingAnimationTracks()) do
		v:Stop()
		v:remove()
	end
	Char.Animate.Disabled = true
	local Anim = Char.Humanoid:LoadAnimation(script.DownAnim)
	Anim:Play()
	Idle = true
	if Char.UpperTorso:FindFirstChild("Fly") then
		local Fly = Char.UpperTorso.Fly
		Fly.Velocity = Vector3.new(0, Speed * -10, 0)
		for i, v in ipairs(Char:GetChildren()) do
			if v:IsA("MeshPart") then
				v.Touched:connect(function(hit)
					Fly:Remove()
					if Char.UpperTorso:FindFirstChild("Fire") ~= nil then
						Char.UpperTorso.Fire.Enabled = false
						game:GetService("Debris"):AddItem(Char.UpperTorso.Fire, 5)
					end
					Char.Animate.Disabled = false
				end)
			end
		end
	end
end)
--[==[ ({ Move }) ]==]--
script.Move.OnServerEvent:connect(function(Client)
	Idle = false
	local Char = Client.Character
	for i, v in pairs(Char.Humanoid:GetPlayingAnimationTracks()) do
		v:Stop()
		v:remove()
	end
	Char.Animate.Disabled = true
	local Anim = Char.Humanoid:LoadAnimation(script.MoveAnim)
	Anim:Play()
	local Mouse = Client:GetMouse()
	Char.HumanoidRootPart.CFrame = CFrame.new(Char.HumanoidRootPart.Position, Mouse.Hit.p)
	Char.UpperTorso.Fly.Velocity = Char.HumanoidRootPart.CFrame.lookVector * Speed * 10
	Mouse.Move:connect(function()
		if Idle == false then
			Char.HumanoidRootPart.CFrame = CFrame.new(Char.HumanoidRootPart.Position, Mouse.Hit.p)
			Char.UpperTorso.Fly.Velocity = Char.HumanoidRootPart.CFrame.lookVector * Speed * 10
		end
	end)
end)
--[==[ ({ Stop }) ]==]--
script.Stop.OnServerEvent:connect(function(Client)
	local Char = Client.Character
	for i, v in pairs(Char.Humanoid:GetPlayingAnimationTracks()) do
		v:Stop()
	end
	Char.Animate.Disabled = true
	local Anim = Char.Humanoid:LoadAnimation(script.Idle)
	Anim:Play()
	Char.UpperTorso.Fly.Velocity = Vector3.new(0, 0, 0)
	Idle = true
end)
script.Fast.OnServerEvent:connect(function()
	Speed = 25
end)
script.Slow.OnServerEvent:connect(function()
	Speed = 5
end)