To watch YouTube without interruption, your download speed must meet specific thresholds based on the video resolution. Video Resolution Recommended Sustained Speed 20 Mbps - 50 Mbps 1440p (QHD) 6 Mbps - 18 Mbps 1080p (Full HD) 720p (HD) 480p (SD)

While a general internet test tells you your raw bandwidth, specific tools can help pinpoint issues with video delivery: What Internet Speed Do I Need For Streaming - Astound

Note: For households with multiple people streaming at once, you will likely need at least to ensure everyone has enough dedicated bandwidth. 2. Best Tools for a YouTube Download Speed Test

Streaming high-definition video is one of the most bandwidth-heavy activities on the internet today. A is essential for determining if your connection can handle everything from 1080p movies to 4K live streams without constant buffering. 1. Essential Speed Requirements for YouTube