They sound like Panasonic discs made in Japan for distribution by Verbatim, and are reported to be good quality. Try at 2x speed and see if your PS4 copes with the layer break.
Bluto
Alright here’s an update.
I burned Star Wars at 2x like you recommended and also made sure that no other programs were running on my computer. I put it in my ps4, and for some reason it is actually worse. My ps4 now doesn’t even play the little intro by harmy from the beginning. Instead, its just a black screen for a second like it is trying to read it and then immediately plays the menu. When I try to play the movie, or do any function at the menu, the entire thing freezes.
Then, I put the same disc into my bluray player, and whaddya know? It plays everything perfectly. I skipped ahead to the layer break in the movie, which was at the point where the stormtroopers are inspecting the millennium falcon, and to my surprise, there was absolutely no buffer this time. All of the audio tracks work and all of the special features worked as well.
So, by burning this one movie at 2x, I have made it almost unplayable on my ps4, yet at the same time 100% playable on my bluray player. Very very strange indeed.
Will post again when the other two movies are finished