The official PS2 adapter does work much better than the gamestar one. It does not hang at the green screen when choosing UDMA 4 and loads fast. I will never go back to the gamestar one, especially since it does not have ethernet support.
I uploaded my save file to check. The sound problem happens all around the game though.
Hopefully this problem gets fixed in future OPL versions.
Best regards
@RetroGamer90s, thank you, i tested your save game and you're right, i'm afraid you found one of the few games that doesn't work well with the internal HDD.
The truth is that looking at the compatibility list, the Tales of the Abyss appears with music/sound problems having been tested with OPL 0.9.2, even using the Callbacktimer function that was removed later:
http://sx.sytes.net/oplcl/games.aspx
I thought that after so many years this game would already be fixed, since this is a popular game and nobody has complained in so long, but it is clear that it does not work well.
When you load the save game you appear in the field next to the flying ship and Shurrey Hill, entering the Shurrey Hill the audio and music works, but if you go back to the field again, the music and sound
disappear completely, the whole game is silent.
Once this error has not occurred and when you return to the field the audio has continued to work, but if you insist on entering Shurrey Hill and returning the game you will always be silent on the field.
The second or third time you enter the Shurrey Hill consecutively, the loading screen stays black for a long time and i have come to believe that the game has freezed, but in the end it has loaded the screen.
It also happens sometimes when you get on and off the flying ship that a clearly corrupted SFX sound
is heard.
I tried many of the OPL and Compatibility Modes but nothing fixes it.
Then i remembered that the user
@Zarper had sprite corruption problems with the game Phantasy Star
generation 1, he compiled a Beta with numerous speeds different from Mode 1, and it helped him to fix
the problem.
Specifically he used the 900Ks speed of Mode 1:
https://www.psx-place.com/threads/open-ps2-loader-game-bug-reports.19401/page-10
I have used the same 900ks beta, entered and exited from Shurrey Hill to field 5 or 6 times in a row and the
audio has not disappeared, and not ocurred the corrupted SFX of the flying ship.
Download this pack:
https://github.com/ifcaro/Open-PS2-Loader/files/2672594/OPLv2.zip
Take the Beta called "OPL 0.9.ELF", not any of the others, when you load it, activate Mode 1, do not activate
any other Compatibility Mode, do not use MDMA 0, use the default UDMA 4.
Go in and out several times in a row from Shurrey Hill to the field and play the game, i hope it works
fine for you also, let me know.
Best regards.