I can confirm that this odd problem is fixed when either removing the battery or disabling it. In fact, my intuition is that this is a problem with the Microsoft driver for the battery, since now I'm running the laptop with battery (after disabling the driver) and the videos don't freeze.
So the question is, there is other driver that we could use for these?
I just registered here to thank everyone on this thread for this solution. Ever since I upgraded to Windows 10 my system has been plagued by this annoying problem. In my case I can confirm that yes when playing a video it does stall for a second or two, at precise 60 second intervals. I didn't perceive that as the problem initially - it was more that my computer paused (froze, stalled, stuttered, delayed) regularly irrespective of what I was doing. I wouldn't lose keystrokes - but the stuttering was infuriating and made working on the system a chore. Every now and then I would search for a solution on the internet - but searching for stalls, stutters, micro freezes, micro pauses, micro delays etc. gets you so many false positives. Success finally came when I narrowed my search to my specific computer - Acer Aspire 5741G - and found someone reporting the video freezing every 60 seconds. I checked and amazingly (to me) my video stalls were occurring at precisely that frequency too. Now I had something that was much more google-able. I found this thread, and the fantastic workaround involving disabling the battery driver (who would have thought?). It's been two days now and my computing experience has received a new lease of life. Thank you.
Quote