If your ranked matches in Rainbow Six Siege start feeling messy – shots not registering, operators snapping back into place, or teammates rubber-banding across doorways – packet loss is often part of the problem. The good news is that a reliable packet loss fix usually starts with a few practical checks, not a full network overhaul.
Rainbow Six Siege is sensitive to unstable connections because even small interruptions can affect hit registration and movement sync – in our article about Rainbow six siege FPS drops: how to. In fast competitive play, a connection that looks “fast” on paper can still perform poorly if packets are being dropped, delayed, or reordered. This guide walks through a step-by-step troubleshooting process to reduce packet loss, improve stability, and make ranked sessions feel smoother.
Check whether the problem is really packet loss
Before changing router settings or calling your ISP, confirm that packet loss is actually happening. In Siege, symptoms often include stuttering movement, delayed ability use, and players appearing to teleport short distances. Those signs can overlap with high ping, server-side issues, or local Wi-Fi instability.
Start by testing your connection outside the game. Open a speed test, then run a continuous ping to a stable server such as your router, your ISP gateway, or a public DNS address like 1.1.1.1 or 8.8.8.8. If you see dropped replies or large spikes, the issue is likely on your network path. If the connection is clean but Siege still behaves badly, the problem may be local to the game session or the route to Ubisoft’s servers.
Ubisoft’s official support pages also recommend checking for general connectivity issues first, including NAT type, firewall rules, and unstable wireless connections. That order matters, because many players chase game settings when the real issue is the network link itself.
Use a wired connection first
The fastest packet loss fix for many players is also the simplest: switch from Wi-Fi to Ethernet. Wireless connections are more vulnerable to interference from walls, neighboring networks, Bluetooth devices, microwaves, and even distance from the router. A small amount of interference may not hurt browsing or streaming, but it can be enough to disrupt an online shooter.
If Ethernet is already in use, check the cable and port. A damaged cable or loose connector can cause retransmissions and instability that look like packet loss in-game. Try a different Cat 5e or Cat 6 cable and, if possible, a different LAN port on the router or switch.
For players who cannot use Ethernet, move the console or PC closer to the router, use the 5 GHz band instead of 2.4 GHz, and reduce the number of devices sharing the same wireless network during play. These changes do not guarantee perfection, but they often cut down on rubber-banding enough to make ranked matches playable.
Restart the network chain in the right order
Power cycling is a basic step, but the order matters. Turn off the game first, then shut down the PC or console. Next, unplug the modem and router for at least 60 seconds. If you have a separate modem and router, power the modem back on first, wait until it fully reconnects, then start the router, and finally launch the game.
This process clears temporary faults and renews the network connection (more on this topic). It can help when packet loss starts suddenly after hours or days of uptime. If the issue returns quickly after a restart, that points to a deeper problem such as congestion, firmware trouble, or line instability.
While you’re at it, disconnect other devices that may be consuming bandwidth. Cloud backups, game downloads, video calls, and 4K streaming can all interfere with a stable match, especially on slower upload speeds. A ranked session is not the time to let a console update run in the background.
Update router firmware and game network settings
Outdated router firmware can create connection problems that are hard to spot. Log into your router’s admin page and check for firmware updates from the manufacturer. If your router has been running the same software for a long time, an update may improve stability and fix bugs related to wireless performance or NAT handling.
On the Siege side, make sure the game is fully updated and that your platform’s network settings are correct. Open NAT is generally the easiest state for multiplayer matchmaking, while moderate or strict NAT can cause connection issues in some setups. On consoles, this may involve enabling UPnP on the router or setting up port forwarding according to Ubisoft’s support guidance and the platform holder’s documentation.
PC players should also check firewall and antivirus rules. Security software can sometimes inspect or block game traffic, which may create timeouts or intermittent packet loss symptoms. If needed, add Rainbow Six Siege and its launcher to the allowed list, then test again.
Reduce local network congestion
Packet loss is not always about a bad line. Sometimes the home network is simply overloaded. If one person is uploading photos, another is on a video call, and a third device is downloading a large update, your game packets may get delayed or dropped.
Many modern routers offer Quality of Service, often labeled QoS or traffic prioritization. If available, give gaming traffic priority over large downloads and streaming. This will not fix a damaged connection, but it can lower latency spikes and reduce the chance of rubber-banding when the network is busy.
Also check for bufferbloat, a common issue where a router handles too much traffic inefficiently. You can test for it with online tools that measure latency under load. If your ping jumps sharply during upload or download tests, a router upgrade or better QoS settings may help more than changing DNS servers ever will.
Test DNS, server region, and route stability
DNS rarely causes packet loss by itself, but changing to a reliable resolver can sometimes improve connection setup speed and reduce weird matchmaking delays. Many players use Cloudflare’s 1.1.1.1 or Google Public DNS at 8.8.8.8 and 8.8.4.4. This is a quick test, not a guaranteed fix, but it is easy to try and easy to reverse.
In Siege, server routing matters. If your region selection or matchmaking route sends you through a poor path, you may see more instability than expected. Run a traceroute or use a network monitor to see whether packet loss appears before it reaches Ubisoft’s network. If loss starts at your ISP hop or earlier, the issue is probably outside the game.
When you suspect routing problems, capture a few test sessions at different times of day. If the problem only appears during evening hours, congestion on your ISP’s network may be part of the story. That pattern is useful evidence if you need to contact support.
When to contact your ISP or Ubisoft support
If you’ve already tested Ethernet, restarted the network, checked firmware, and reduced local traffic, the remaining packet loss may be outside your home. At that point, collect data before contacting support. Save ping test results, note the time of day, record whether the issue happens on multiple devices, and mention whether other online games are affected.
Your ISP can check line quality, modem signal levels, and neighborhood congestion. Ubisoft support can review game-specific symptoms, account issues, and known service problems. If you have screenshots or short clips showing rubber-banding, desync, or disconnects, include them. Clear evidence speeds up troubleshooting.
If the problem is limited to Rainbow Six Siege while other games run fine, that does not automatically mean the game is at fault. It may still be a route issue, an unstable local setup, or a compatibility problem with your router. Support teams can help narrow that down when you provide specific details.
Build a stable setup before ranked play
The best packet loss fix is usually a layered one. Start with a wired connection, clean up the router and modem, remove background traffic, and make sure your network settings are properly configured. Then test again under real match conditions, not just on a speed test page.
For competitive Rainbow Six Siege, consistency matters more than raw download speed. A 300 Mbps line can still feel terrible if packets are dropping, while a much slower but stable line can perform better in ranked play. Focus on stability first, then speed.
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If you want fewer rubber-bands, fewer desync moments, and less frustration during clutch rounds, treat packet loss like a troubleshooting process, not a mystery. Step through the checks in order, verify each change, and keep notes on what actually improves the connection. That approach gives you the best chance of locking in a smoother, more reliable ranked experience.
