How do I get Mac OS Big Sur to stop crashing when I have 2 graphics cards inserted? (5,1)

Right now I have my GTX 780 Ti and GT 120 both inserted to their own 16X slots, the 780 Ti is fully connected with all cables. Whenever I try to boot into Big Sur, the loading bar never progresses and Mac OS crashes, however when I take the 780 Ti out it can load. I’m trying to install the drivers for the 780 Ti but I can’t do it without the card in the system. What can fix this?