Wavelab 12 render extending past splice marker into the next song

Hi, I’m tearing out my hair with this issue.

I have an album already mastered and sequenced in WL 12 Pro. It has a couple of songs that merge into each other so the accuracy of the markers is a huge deal.

The first song on this album plays into the second, and the second starts right into a big kick, just after a splice marker.

When I play from that splice marker in WL it plays fine, I hear the kick just fine. When I listen to the render the attack of that first kick is in the end of the first song. It’s around 100ms off I’d say.

I’ve been rendering titles/all titles and title groups. I think that when I render the full album to one file (title group) the sequence plays perfectly as I hear on WL. Rendering the clip works fine too, but that’s of no use to me here as I need the overlap of song 1 into song 2.

I’m using reputable plugin companies in their latest versions, or the next to the last version, as I regularly check for updates. This project is all Softube, UAD, Plugin Alliance, TDR, Isotope, Sonnox and Crave. All in the box.

My first guess is some kind of issue with PDC, but it plays fine on the WL timeline, and the issue is still there even when doing a real time render.

“Add reverb tail” is unselected. The plugins are only on the clips, nothing on the (single) track, nor the output, nor the master section. Fade in/out boundaries status makes no difference.

The render duration is the exact duration it shows in WL. I’m guessing the start is getting delayed (can’t be sure as the first song starts in a fade in, and I’m unsure if the rest of the album has this same issue).

Any thoughts?