I've found it very flaky in the past. Half the time it can't load a video or it crashes while playing the video. I'd understand if some of the issues came from being throttled the way yt-dl does, but the Android user agent that my phone has (which is the workaround that yt-dlp uses right now to be unthrottled) should present unthrottled downloads. I have a better experience having a service running on my seedbox which downloads and serves a Youtube video than using Newpipe, which says something.