From the pingplotter you posted, your packet loss in in your home network ... 192.168.0.1. The first hop must be zero loss and <1msec latency. Your post shows 13.3% loss and and avg of 28msec latency.
Is the device running pingplotter wired or WiFi. If wired, check your wiring. If WiFi, maybe interference is causing the problem. I would run another pingplotter with a wired connection. Also, change the WiFi channel, if you have an Android device, WiFi Analyzer is a good app to help find a clearer channel. On a PC, Acrylic WiFi Home is a good free wifi analyzer for Windows.