Checked out a few VOB files in 11.08 here. No issues.
Under OPTIONS | MEDIA tab, UNcheck the box that reads
and see if that helps.
Let's have a look at one of your files that won't load. That's the only way we can see what you see. Please list your PC's specs: CPU/GPU/RAM.
Upload the file/s to a free server, such as Google Drive or MS OneDrive, get a shared (public) link, copy the link and paste it here or to me in a Private Message via the mail envelope in the top-right corner of this forum. When using Google Drive, if necessary change "restricted" to "anyone with link can view."