Hi, Bob.
If it's only the router, it may just be the number of outstanding results you have on one route vs another. Sometimes, routers have limitations (or configuration settings) that dislike multiple outstanding requests, and depending on timing, route length and other things around you it may behave differently.
The things to keep laser-like focus on, though, is the final destination. If your final destination is looking good, then the intermediate hop is just informational - and that information isn't supporting a problem at the final destination. If you're seeing a correlated problem at the final destination, then it's worth pursuing.
We have a variety of articles on the final destination vs intermediate hop conversation, but here are some of the most relevant:
https://www.pingman.com/kb/24https://www.pingman.com/kb/47https://www.pingplotter.com/netnirvana/If that's not what you're seeing (final destination good, intermediate hop bad), then feel free to post an image or .pp2 file of the different scenarios (or send our support team an email, if that's easier) and we'll be happy to have a look.
- Pete