Unusual Link Problem
Unusual Link Problem
This situation is tricky to understand. In my home we use Fiber internet with 200mb speeds. We also have a PC and an Xbox Series X both connected directly to the router. The problem happens when playing games: when my wife joins from the Xbox to my PC, everything works smoothly. But when I connect from my PC to the Xbox, there’s severe lag in multiplayer because the ping is too high. I’ve checked with a friend who has his own Fiber connection nearby. With him and mine on the PC, we can play without issues, but connecting both of us to the Xbox causes massive lag. My router has UPNP enabled, and I’ve set QoS on the Xbox to prioritize it, but the results are the same. I’m unsure if the issue is with the router or the Xbox settings.
Start by accessing the resource manager separately from the task view. Navigate to the network section and select the column labeled network down or up. This will display the active connection in real time. Consider installing Wireshark and checking for red or black lines, which signal a failed link. Black lines with green text mean a retransmission of a prior failure. Try turning off IPv6 at both router and PC levels. It may be related to a PC NIC configuration—adjust the MTU settings to 1472, 1480 or 1492 for testing. Review possible NIC configurations. Open the control panel, not the settings menu. Go to network adapters, right-click your Ethernet card and choose properties. Click "Configure" to modify its settings. In the new window, switch to the advanced tab. Browse through options, experiment one by one, and unplug or reconnect the cable each time.
Uncertain about adjusting MTU settings here. There’s no clear need to change them—it doesn’t seem like you’re using encapsulation or jumbo frames. For more accurate troubleshooting, consider running an iPerf test (https://iperf.fr/). There’s plenty of guidance available there. If unsure, try testing on your own device first and observe any changes in performance. Enabling QoS won’t help much since it only prioritizes traffic locally, not from the ISP. It’s unlikely to make a noticeable difference. What router model are you using at home?