Besides, YouTube has left off Adobe Flash and use html5 by default for their videos. But actually, Chrome use a buildin flash, not the adobe one. YouTube video is lagging, choppy, stuttering, or jerky only in Chrome, especially when it is in full screen mode, but it is running without lag on other browsers. (see why Hardware acceleration is a must for 4K video processing) Also the internet connection has a decisive factor to avoid YouTube video lagging in 4K/HD and smooth the playback process.Ĭase 2: YouTube video is lagging ONLY in Chrome Most importantly, GPU-based hardware acceleration is especially a must for playing 4K/2160p videos, if your laptop or notebook is configured with Intel, Nvidia, or AMD for acceleration. This is because 4K video is computer intensive, you will need a much stronger computer for 4K. Move on and check why the video they play on YouTube lags or stutters frequently?Ĭase 1: YouTube 4K 60fps videos lag and stutter terriblyįrom time to time, your 720 60fps works fine, but switching to 1080 60fps or 4k UHD resolution on YouTube causes bad lagging and freezing, with very high CPU usage. There are various YouTube videos lagging phenomena and the culprits causing the laggy video playback on YouTube can be various, from the browser caches, driver-related problem, to hardware configuration. Part 1: Cases and Why Do YouTube Videos Lag on Chrome, FireFox or so