Autoit Basic Macro - Mouse movement NOT smooth ingame

#NoTrayIcon
#region ;**** Directives created by AutoIt3Wrapper_GUI ****
#Obfuscator_Parameters=/cs /cn /cf /sf 0 /sv 1 /sci 0
#endregion ;**** Directives created by AutoIt3Wrapper_GUI ****

#include <Timers.au3>
#include <WinAPI.au3>
#include <Constants.au3>
#include <WindowsConstants.au3>

HotKeySet("{END}", "A5B00301A3D")
HotKeySet("{HOME}", "OnAutoItExit")

Global $bActive = False
Global $hTimer

Global $iDelay = 10
Global $hTimerDelay = _Timer_Init()
Global $hTimer = _Timer_Init()

Global $hHook, $hStub_KeyProc
Global $bFire = False
Global $hmod
Global $iRecoil = 0.5


While 1
	If $bActive Then
		If $bFire Then
			If _Timer_Diff($hTimer) > $iDelay Then
				If $iRecoil < 0.5 Then $iRecoil += 0.02 ; ~.~ this quite useless
				If $iRecoil = 0.5 Then $iRecoil = 0.1 ;    
				_WinAPI_Mouse_Event($MOUSEEVENTF_MIDDLEDOWN, 0, $iRecoil)
				;_WinAPI_Mouse_Event($MOUSEEVENTF_MIDDLEDOWN, 0, 0.1) ; No $iRecoil ctrl
				_WinAPI_Mouse_Event($MOUSEEVENTF_MIDDLEUP, 0, 0)
			EndIf
		EndIf
	Else
		Sleep(100)
	EndIf
WEnd

Func _KeyProc($nCode, $wParam, $lParam)
	;Local $tKEYHOOKS
	If $nCode < 0 Then Return _WinAPI_CallNextHookEx($hHook, $nCode, $wParam, $lParam)
	If $wParam = $WM_MBUTTONDOWN Or $wParam = $WM_MBUTTONUP Then Return _WinAPI_CallNextHookEx($hHook, $nCode, $wParam, $lParam)

	If $wParam = $WM_LBUTTONDOWN Then
		$bFire = True
	EndIf
	If $wParam = $WM_LBUTTONUP Then
		$bFire = False
		$iRecoil = 0.5
	EndIf
	Return _WinAPI_CallNextHookEx($hHook, $nCode, $wParam, $lParam)
EndFunc   ;==>_KeyProc

Func OnAutoItExit()
	_WinAPI_UnhookWindowsHookEx($hHook)
	DllCallbackFree($hStub_KeyProc)
EndFunc   ;==>OnAutoItExit

#Obfuscator_off
Func A5B00301A3D()
	#Obfuscator_on
	$iTimer = _Timer_Diff($hTimerDelay)
	If $iTimer > 5000 Then
		$hTimerDelay = TimerInit()
		If $bActive Then
			ConsoleWrite("! Deactivate" & @CRLF)
			_WinAPI_UnhookWindowsHookEx($hHook)
			DllCallbackFree($hStub_KeyProc)
			SoundPlay("dea.wav", 1)
			$bActive = False
		Else
			ConsoleWrite("! Activate" & @CRLF)
			SoundPlay("act.wav", 1)
			$hStub_KeyProc = DllCallbackRegister("_KeyProc", "long", "int;wparam;lparam")
			$hmod = _WinAPI_GetModuleHandle("AVA.exe")
			$hHook = _WinAPI_SetWindowsHookEx($WH_MOUSE_LL, DllCallbackGetPtr($hStub_KeyProc), $hmod)
			$bActive = True
		EndIf
	EndIf
EndFunc   ;==>A5B00301A3D