1st generation iPad YouTube problem, IOS 5.1.1

Hi guys!

I'm using official YouTube app (not the integrated one) to watch videos I'm subscribed to. Most of them are fine, however some videos refuse to work.

They play for like 10 seconds and then stop, as if the video ended and I can replay it. I can still pick any moment in the video and it will play, but no longer than ~10 seconds. I suspect it's the issue with 60 fps videos, but I'm not exactly sure if the videos that are bugging out are actually in 60 fps.

For instance, this video had this issue yesterday: https://www.youtube.com/watch?v=9OvRZGlhhMs

Now, I'm aware that 1st gen iPads are no longer supported by pretty much anything nowadays, but the only thing I'm using my iPad for is watching Youtube before going to bed. So I don't really feel like upgrading it.

Any ideas if I can fix this issue, maybe work around it? Or maybe there's some alternative YouTube app, for IOS 5.1.1?

Thanks.