BACKENDS: PS3 and physical CD issues

[NiQ1]

There are serious issues when trying to play directly from the physical, original discs on PS3. I haven't managed to get a single one to work.

Steps to reproduce -

1. Get a physical copy of a supported game (preferably original, pressed disc, if not available then burn an ISO of one on CD-R).
2. Insert the disc to your PS3, it should show up on XMB as "Data Disc".
3. Launch ScummVM.
4. Attempt to mount the game from /dev_bdvd

Expected result - Game is mounted successfully and is playable.

Actual result - Game does not mount, machine freezes or game is added to the list but does not start.
I've also noticed that in the ScummVM file list I don't see all of the files on the disc, specifically I only saw files in a couple of directories, the rest were shown as empty. The disc is fully readable in Multiman so it's not a disc issue.

[tag2015]

Which games are you trying to run? Some run fine from original media, others require the datafiles to be in a specific layout.

[NiQ1]

So far I've attempted Day of the Tentacle (crashed on startup, the demos also included on the disc showed up as empty directories) and Leisure Suite Larry 7 (the console hang when I tried to add it). These are the games whose original CD I currently have. Can try to get others.