Thanks for writing in!
From the screenshots I'm seeing, I don't think I have quite enough information to be able to tell you which device is acting up. I can tell that you've got some packet loss for sure, but only being able to see the timeline graph at the final destination makes it a bit difficult to tell who the culprit is. If you'd like to send us some more data, feel free to send us a .PP2 file by heading to File -> Export Sample Set -> All Data and sending the file you've exported to firstname.lastname@example.org? If you'd like to do that for all three sessions, that would be great! I'd love to take a look at it from there.
In the meantime, if you'd like to do some poking around of your own, we have a handy article that can start pointing you in the right direction:https://www.pingplotter.com/fix-your-network