Ok so I figured this out now.
My issue was that project pages would show me the wrong embedded vimeo video after navigating back to the showreel and into another project.
The solution:
In the LayOptions you can uncheck the "Disable Ajax / Compatibility Mode"
Now the vimeo videos load as expected.
Hello, I made multible projects with embeded Vimeo videos and a Showreel page using the thumbnail tool. Now after clicking on one of the thumbnails, the correct video appears but when I click back on the Showreel and on another project thumbnail the same video I clicked on before appears again, instead of the one I linked on the page.
Here is the link to the site: http://new.ramharter.org
This issue only applies on desktop browsers not on mobile.