PCI-e x8 Card not detected consistently Jetson Orin

I’m trying to use a video capture card on Orin x16 slot, It’s an x8 Card. I’m observing inconsistent behavior detecting the PCI-e card when the Orin starts up. I’m using MAXN power mode.

However, if I switch the PowerMode to 50W and reboot. The Card is detected properly on next startup, but not detected on further startups. What is the reason for the card only being detected when switching powermodes?