Persistent smart TV buffering issues were resolved by enabling QoS (Quality of Service) on a home router. QoS prioritizes network traffic for specific devices or activity types, ensuring the smart TV gets bandwidth priority over less critical devices. The fix is accessible via the router's admin panel (typically at 192.168.0.1 or 192.168.1.1) under Advanced settings. Different router brands offer varying levels of QoS customization — TP-Link allows per-device priority, while ASUS supports prioritization by app or activity type. QoS may be less effective if internet speeds are already very high (300–500 Mbps), as the bottleneck may lie elsewhere.
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