Is this caused by a bad burn?

[Rovelius]

I burned the first DVD of METAL GEAR SOLID THE TWIN SNAKES PAL yesterday at x4 with IMGBURN, on a DVD-R. The game runs fine but for some reason the cutscenes don't - the action itself is going okay but the subtitles are way too fast. The cutscene is not even half-finished that the subtitles already flown by so the Wii stops the cutscene, sometimes resulting in a temporary hanging screen with one of the subtitles showing.

I'm on a 4.0U Wii using GCBackupLauncher Xi 0.1, only patched MIOS works with Metal Gear so far. I would get GCBackupLauncher 0.2 but all I get is a monochrome screen, which sucks.

Any idea why this is happening?

[EDIT] Running on cIOSCORP 3.5

[Rovelius]

Bump, I still haven't fixed the issue...