Clips not being linked correctly after restart

I'm currently editing an aftermovie for our company-party. I've recorded it with 7 cameras (all internal timecode synced). 4 of those are timelapse cameras which are running realtime. They are a GoPro 9, 11, 12 and a Panasonic GH5.

I've imported all footage and sycned it with TentacleSync. Now whenever I reopen the project, the footage of the GH5 and the GoPro 9 is offset. Like its not correctly linked. It's showing the "Danger lines" (see yellow label for the GH5 footage)

Nothing has changed in between reopening the footage. No name changes, no drive letter change, just a simple restart.

All footage (total of 1.34tb) is on a T7 ssd from Samsung. 

Any ideas?