Hi Torben D,
Have you seen this thread in Dell discussion portal? https://www.dell.com/community/Precision-Mobile-Workstations/new-Dell-Precision-7760-problem-conflict-with-Nvidia-platform/m-p/8324592#M11626 What BIOS version you are running today?
This will be resolved some day But lets see how long it will take. Dell and Lenovo models have their own problems.