HTTP via Apache 2.4/Chrome over LAN:    FTP via FileZilla Server/Chrome over LAN:    I'm not quite sure what the problem is I've tried turning memory mapping and sendfile off and on.   Server: Windows XP Pro using Uniform Server, NetLimiter, Hamachi, Windows Firewall, No AV I should mention the DocumentRoot is hosted on an external usb HDD.   Client(s): Windows 7   I've noted the points it pauses: 4, 68, 132 ... 64n+4 MB (not sure if it's MiB or MB, just going off Chrome)   XAMPP works and so does Uni 8.0.0 and it goes slow but doesn't pause if I turn mmap off.   I've tested it on both an external and internal HDD.   Hopefully someone can shed light on what I'm doing wrong?