I know this is a question with maybe too many possible answers, therefore i'm trying to reduce the number of path to explore. From what i've read so far, packet loss can be caused by
hardware performance (routers, switch,..)
My situation is : i have 2 machines (MAC Os X and Windows 10) that undergo packet loss while others don't. I mean machines from the same building, on the same floor don't suffer from that issue.
When i ping the router from those two, lots of packet are lost (about 60 percent). I don't think it's a software bug, link congestion or a hardware issue, otherwise other machines would suffer packet loss, wouldn't they? My guess is, it might come from the cabling. Waiting for the one specialized in wiring (in order to find how the cables are connected to the router), i'm asking you guys if someone can propose other leads? Any other causes?