I changed one channel width setting on my Wi-Fi 6 router, and local streaming stutter completely stopped

If you are experiencing random micro-stutters, frame drops and audio sync issues while streaming high-bitrate 4K content from a local server on a modern Wi-Fi 6 router, the culprit could be the router's conservative wireless configuration. Most routers come with 5GHz channel-width set to a conservative 80MHz, leaving untapped performance potential.

By adjusting this setting, you can boost your theoretical link rate, reduce packet queuing delays, and eliminate local streaming stutter. The channel width, akin to lanes on a highway, can significantly impact data throughput. An 80MHz channel is a multi-lane highway, while 160MHz acts as a wide-open superhighway, doubling the physical-layer link rate.

However, a wider channel also increases vulnerability to interference. To optimize your network, audit your RF environment using a Wi-Fi analyzer tool to identify the least congested 5GHz channels in your home. Adjust your router's settings to enable a clean, non-overlapping 80MHz block or 160MHz channel, depending on your environment and hardware compatibility.

Keep in mind that 160MHz might cause interference in dense urban areas with many neighboring Wi-Fi 6 routers. Ensure your streaming devices support wide channel bonding for maximum benefits.