UseYouTube Video Converter & Downloader Pro.You can download your preferred videos into your device's memory, so the playback should happen without any sort of stutter. Enjoy!

What I use isYouTube Video Converter & Downloader Pro, and it suits me just fine. It is a web app, you have nothing to install, so it should work on any browser and mobile platform, including apple devices, and android devices, like Samsung S23 Ult...