Hey Gavin,

First and foremost - it looks like you've done a fantastic job of eliminating the possible variables in your troubleshooting efforts here. Thanks for sending over all the details and pp2 files - we appreciate it!

From what we can see in the results you've attached here - this issue *appears* to be a load-based problem. If this is the case... then your ISP *would* need to be involved in any potential solution on this one. I'm sure this is something you were probably hoping to avoid, however, there are some additional things you can try to get things working in your favor here.

In the few days worth of data you've got, things seem to be at their worst across all of your targets between 12am and 8am - so this issue *looks* to be a time-based pattern.

Your next goal should be to correlate those problem times with something that could be causing a heavy load on the network during those times. It sounds like you've ruled out anything in your home network - but could there be a nearby business using a large amount of data between these hours? Or maybe some neighbors online during these times? If you can tie this pattern to something that could be occurring nightly and affecting the network - it would be much easier to communicate to your ISP to try and get a solution.

If the technicians are coming out during the day (and *not* between 12am-8am), then it's possible that they don't see any issues with the line (because there may not be any issues during that time). We'd recommend continuing to run PingPlotter (and saving your results!) to see if this pattern persists - and so you've got information to forward on to your ISP as well.

We've got a guide that goes over the process of troubleshooting a network issue, as well as communicating the issue to a provider to try and reach a solution. It looks like you've managed to already get through most of the steps in this guide on your own - but some of the information here may still prove useful to your situation here:

http://www.pingplotter.com/netnirvana/

Please let us know where this leaves you! If you have any questions, or need any further guidance - we're always happy to help out.

Best wishes,

-Gary