On my official page on TIZ I had posted various settings you needed to use in DiscJuggler. If you can find a link backed up on Internet Archive, it should have all the settings documented. Let me see here if I can find it. One moment.
Oh wait, the settings I used are on the first page of this thread.
I got the GT2 disc to burn using DJ 6 trial with making it Audio mode, Block 2352., TOC CD-DA.
So I reckon that would be the best setting for those 2 discs, not sure what worked for the MGGS one. I remember I had a hell of a time burning this particular version of the emulator that was hacked to skip disc check. I am on a GDEMU now with 128gb micro SD card, and no working DC here with disc drive. So I can't be more help than this.
I also had a compatibility list I got the community at TIZ to help me create from testing out all the games they could. https://web.archive.org/web/20180820023 ... =27&t=3665
If I remember correctly, mistamontel got MGS VR missions or something else to work with saves fully working as well too. I believe that was the only game anybody could get working fully with this version of the emulator.