I purchased a x700 and I watched Dolby Vision films last Friday, Saturday and Sunday

. Last night I started to watch Apocalypse Now Final Cut and shortly after the 30minute mark the subtitles started going out of sync. I stopped the film and after restarting the player I wasn't able to fast forward, I've since read a few films have the fast forward problem.
I'm wondering if the subtitles going out of sync is caused by whatever is causing the fast forward problem, or if it has something to do with this information tsMuxer gave after muxing Apocalypse Now Final Cut:
B-pyramid level 3 detected. Shift DTS to 4 frames
Does anyone have any idea how I can prevent the subtitles going out of sync?