Thank you for getting back to me!
The menu is very simple, created in After Effects. Despite button and actual video there is nothing else I added. All I did was just link it all up. First Play is linked up to Menu, and video loops after 7 seconds of the intro. That’s about it (standard, very simple menu :)) Preview seems to work fine, I burnt it 6 times using different DVDs (first time I was using cheap ones and thought it could cause the problem) but still same thing is going on. Re-creating menu didn’t help as well.
I took two sills from encore, maybe that would help to get an idea what I’m doing wrong 🙂
https://img5.imageshack.us/i/picture1vdy.png/
https://img514.imageshack.us/i/picture3jlq.png/
Thank you again!