Problem watching any content from the library

Hello Mirai Team,

for two weeks now I do have a problem watching any content out of the library for longer than about
6 to 8 min.
Any Video I start works fine for 6 to 8 minutes after that it stops. I can not play forward or do anything.
If start a new video right after the other one stoped, this new video again plays for 6 to 8 min only.

I am watching the content using an iPad Air3 with IOS 15 or with an I Mac which is on Mac OS BigSur.

I have no problem to stream any other content on other platforms like amazon, so it’s not an internet connection issue.

Does anyone else have this problem?