Bufferbloat Explained: Why Uploads Ruin Gaming (And the Fix Order)
Bufferbloat is what happens when your connection builds queues under load. The internet still works, but latency spikes. In games, it feels like heavy input and late reactions, especially when someone uploads or cloud sync runs.
What It Feels Like
- You aim and it feels delayed for a moment.
- Shots register late during busy network moments.
- Everything feels fine until someone uploads or downloads heavily.
The Cause (Simple)
When a router or modem buffers too much, packets wait in line. That waiting time is extra latency. It is not visible in average ping, but it is visible in spikes under load.
How to Test (Practical)
- Start a real upload (cloud sync or file upload).
- Play or measure at the same time.
- If spikes appear only under load, suspect bufferbloat.
Fix Order
- Stop background uploads while gaming.
- Use Ethernet to remove WiFi noise from the diagnosis.
- Reduce queue behavior on the router, aiming for stable latency under load.
- Only then consider replacing hardware if you cannot stabilize it.
The key idea: online feel is timing. Bufferbloat is timing being stolen by queues.
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