What is Packet Loss in Online Gaming?
In online multiplayer games, your device continuously sends small packets of data containing your character's position, key inputs, crosshair angles, and mouse clicks to the server. When packet loss occurs, some of these data packets are dropped in transit. Unlike regular web browsing where dropped packets are simply re-sent with delay, real-time gaming protocols (UDP) drop lost packets permanently to avoid stalling the match.
Why 1% Packet Loss is Worse Than 100ms Ping
A stable 80ms ping allows your brain to adjust to a consistent delay. But even 1% or 2% packet loss destroys prediction algorithms in modern game engines like Unreal Engine and Source 2. When a packet containing a shot or dodge command is lost, the server rejects the event. This causes phantom bullets, "ghost" hitmarkers, teleports, and rubber-banding.
How to Fix Packet Loss on PC, PS5 and Xbox
- Ditch Wi-Fi for Ethernet: Wireless interference from walls, microwaves, and household smart devices is the #1 cause of packet loss.
- Enable Router QoS / SQM: Prevent bufferbloat by prioritizing gaming packets over background 4K video streams or downloads.
- Restart Network Hardware: Power cycle your modem and router every month to clear routing memory leaks.
- Contact Your ISP: If tests consistently show packet loss in the evening (7 PM - 11 PM), your ISP has local node congestion.
Frequently Asked Questions
Is 0% packet loss realistic?
Yes. A healthy wired fiber or cable connection to a regional datacentre should consistently achieve 0.0% packet loss over hundreds of packets.
Does Discord cause packet loss?
Discord uses UDP for voice calls. If your network's upload bandwidth is saturated, outgoing voice packets will drop, resulting in robotic audio or cutting out.