[michidg]

I have some problems with about 10% of my dvds ( iso and video_ts folder ).

Does enabling "attempt to skip introduction before DVD menu" help?
Does disabling deinterlace (and then selecting "set as default for all videos") help?

Could you provide a sample file? With dvd images this is a little tricky but there are tools that allow you to delete or cut down the main feature but leave the menus intact.

tried it now, both does not help.

Sure i can provide it, can you tell me which tool could be used ? never used something like this.