id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
2171	Inconsistent delay for TCPTimeout option	ripdad	Jpm	"A timeout of 1000ms and higher causes a sleep delay.
Delay time depends on TCPTimeout setting.
Examples:

Opt('TCPTimeout', 1000) = 1 second
Opt('TCPTimeout', 2000) = 2 seconds
Opt('TCPTimeout', 5000) = 5 seconds

Thanks goes to AdmiralAlkex showing timer differences.
{{{
TCPStartup()
;
Local $iTimer, $Socket, $Server = TCPListen('127.0.0.1', 80)
If $Server = -1 Then Exit
;
Opt('TCPTimeout', 999); <-- set this higher to reproduce the problem
;
Local $gui = GUICreate('TCPTimeout Test', 400, 250, -1, -1)
GUISetState(@SW_SHOW)
;
While 1
    Switch GUIGetMsg()
        Case -3
            TCPShutdown()
            GUIDelete($gui)
            Exit
    EndSwitch
    ;
    $iTimer = TimerInit()
    $Socket = TCPAccept($Server)
    MsgBox(0, '', TimerDiff($iTimer))
    ;
    TCPCloseSocket($Socket)
WEnd
}}}
Link: [http://www.autoitscript.com/forum/topic/137646-tcptimeout-bug/]"	Bug	closed	3.3.9.22	AutoIt	3.3.8.1	None	Fixed