Having a strange issue here, not sure if there are any networking people hanging about but it has stumped me. I've got a brand new Cat7 cable which is hooked up to our Orcon NF4v adsl line. When taking a speedtest, same server, same cable I am getting different pings on two different machines. This is not the issue, I realise that many factors can come into play, the issue is that my vastly superior desktop machine with a gigabit port is getting consistent pings of 27 while my ancient NEC laptop is getting consistent pings of 16. My desktop was built in the last couple of years, Gigabyte Sniper B7 MB with an Intel Gigabit port. The max speeds of the port on the laptop is 100mb/s. The laptop is running Windows 7 SP1 and the desktop is running Arch with the 414 kernel, I've already tried installing windows on the desktop, but that gives me the same results. I have also tried a different cable, same results, static IP, same results, changing the duplex values, changing DNS servers, disabling NAT on the Ethernet line, reinstalling the most recent drivers while running Windows 10 on my desktop (drivers that were released 10 years after the final update of the laptop's drivers) which surprisingly all producing the same results. Both using the chrome as the browser although I have tried using Firefox which also produces the same results.

I'm looking at some trace routes from the router, however I can't seem to understand what they are telling me, perhaps someone can point me in the right direction. Anyone know any other tools I can use to debug the issue and see where these extra 14 or so ms of ping are bizarrely coming from? The download speeds are also slightly different with the laptop again winning out, however I couldn't tell you exactly by how much.

Please don't bother commenting if you are just going to say "I wouldn't worry about it, it's not going to make a difference anyway..." I am looking to debug the issue, not to ignore it.