The destination server in the image below is a music streaming server. From 1:40 through 7:40 the music stream was heavily skipping. At 7:40 my modem reconnected to the internet and got a new ip address.





Below is the log for another server for the same time period. The related service hardly worked from 7:40 through 12:00.





Please help identifying the problem.

This looks like a problem with your ISP on the return route. There's probably a saturated or problem link on data that is coming back from those servers to you. It's not one of the outbound routers (that you can see) because if it were, all of the hops would show similar issues. Because only some of them do, that's a strong indication of a return route problem.

Hop 2 also looks pretty questionable, and the data there looks like there might be some bandwidth saturation going on. Because hop 1 is inside your own network (right?), and hop 2 is outside your network, this might indicate that your link to your ISP is being saturated. Downstream hops look pretty good, though, so the hop 2 latency might be related to the high packet loss you're seeing at other times.

- Pete

P.S. You're using a pirated, cracked copy of PingPlotter Pro. If you find the data PingPlotter is giving you useful (or the advice you asked for), we'd appreciate it if you purchase a license.