Doboy: Thank you very much for contacting the Intel® NUC communities. We are sorry to hear the NUC is not working as expected.
Even though you mentioned you already installed the latest BIOS version and the latest drivers, just to make sure please try install BIOS version 0041:
Please try install graphics driver version 4849:
If the problem persists, then we can try to install driver 4678:
Any further questions, please let me know.
I switched to HDMI as none of the suggestions helped with my issue. HDMI has been stable so far.