Fix Lag Spikes: The Real Causes (WiFi, Bufferbloat, Congestion)

Online games feel bad when timing becomes inconsistent. The enemy is not only high ping. The enemy is spikes: jitter, bufferbloat under load, and unstable wireless conditions.

Three Common Causes

• WiFi interference: random micro spikes from noise and distance.
• Bufferbloat: latency spikes when uploads or downloads create queues.
• Congestion: your ISP or local network is overloaded at peak hours.

How to Test (Correctly)

1. Test during real use: someone streaming while you play.
2. Look for spikes, not only averages.
3. Repeat at the same time of day to detect congestion patterns.
4. Compare Ethernet vs WiFi once to isolate wireless issues.

Fix Order

1. Stop background uploads while gaming.
2. Prefer Ethernet when possible.
3. If you must use WiFi, move closer and reduce obstacles.
4. Use sane queue behavior on the router to reduce bufferbloat spikes.
5. Only then consider hardware upgrades.

Fix spikes and everything feels faster. That is the real secret of good online play.