BLADERUNNER: Investigate audio video desynch issues

[antoniou79]

People in GOG forums have reported this issue, and some have written that it was randomly fixed the next time they launched the game.

GOG's official trailer for the Blade Runner re-release is an example of said issue -- in this the sound plays noticeably earlier than the image / actor lips moving:
​https://www.youtube.com/watch?v=cb1n8nc-jMI

Potential causes:

• Installing the game on a slow drive (eg. external USB)
• Heavy CPU load on the machine due to other processes(?)
• Additional load from recording the gameplay?

[antoniou79]

One thing I've noticed is that it is possible to cause a video/audio desynch if running the game in windowed mode, and move the game's window around, while a video cutscene is playing.

[IlDucci]

Greetings. I started playing the Restored Content version and did the whole Act 1. The first videos played alright, but Eisenduller's Death (Start of Act 2) did have a A/V desynch.

I'm using Win7 x64, version 2.2.0git2888-g8ab9c8ec77, playing in Windowed mode. I moved the window so I could read other things in my Desktop, but during gameplay, not at a FMV.

[antoniou79]

Another way this was reproduced today was by calling the Ctrl+F5 menu and resuming the game.

[antoniou79]

Wrong ticket, sorry.

[antoniou79]

Assigning this to me.

[antoniou79]

Reverting the priority back to "normal" for this, as I need to off-load my tasks list for the next stable 2.2 version, and it's looking like I might not be able to properly attend to this within the available timeframe.