I have noticed an issue since I downloaded this browser a few months ago, that on my laptop, streamed video playback (youtube, dailymotion, twitter videos, etc.) the video stutters or sometimes freezes while audio continues until the video is forced to buffer.
Now I do have RAM and CPU limitations turned on for the browser with 4GB of RAM and 13% CPU usage (system specs below) however even with these off, it still occurs. It is not as frequent but still there. It is also especially prevalent when using the pop-out video player.
Processor Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz, 2112 Mhz, 4 Core(s), 8 Logical Processor(s)
Memory (RAM) 16.0 GB
Display Adapter Intel(R) UHD Graphics 620
Not sure if this is something specific to my system or something that is being looked into for optimization. But running the latest version of Chrome with a Pop-Out Extension for YouTube doesn't produce these issues nor request as many system resources.