I am playing through V1.5 and I am getting a black screen crash right after the scene where Luna jumps on the boat in Saith. There is dubbed dialog at this point that has an audible glitch right before the end of the scene. Using Beetle Saturn, I can send a save state.
I just had this issue right now. On the boat there is an audible glitch and then black screen at the end of the scene, not advancing. I also had an issue at the old hag's forest - there was an audible glitch when Nash was asking for help and then the next trigger didn't happen and everyone was just standing around forever.
I'm playing on a US Saturn Model 2, using the Satiator to load the game. I was able to get past the freezes by switching to the sub iso, and then saving as soon as possible and switching back to the dub iso.
Also seconding that the voices are quiet. On the boat scene in Saith, I could barely hear them talking over the music and was unable to understand some of the words.
edit: and now it froze (stuck in like a 1s loop partway thru) during Luna's song on the boat. I am also unable to burn it to CD-R to test if it is a Satiator issue (getting an error when attempting to burn it - this has literally never happened before).
edit 2: Found a solution on my Satiator to not freezing during the Saith audio or the boat song. When patching with Sega Saturn Patcher, I selected CUE + BIN + Tracks. Previously, I was only CUE + BIN. Perhaps separating the tracks helps stability. The readme does not mention this, and I'm uncertain if it is mentioned elsewhere in the thread. But I suggest adding it to the readme that CUE + BIN + Tracks is recommended (if you trust me / verify yourself I suppose .
edit 3: Found another trigger not firing resulting in forcing a reset. During battle, Nall goes to someone who is down and says "Don't give up", but that's it. Nothing happens further, forcing a reset. Considering the audible voiceline, I think it's an issue with English. The new cue bin tracks does not help this.