Since I have not been able to pinpoint the issues to the cards, I thought like maybe that the slot on the mainboard has been damaged in the process of installing Gen2. Therefore I went and reinstalled the Gen1 cards – and voila – consistently booting of all slots, Gen1 cards all recognized without any issue and consistently on several follow up reboots.
Honestly, I am lost in terms of what the issue could be. As I have been moving Gen2 cards around trying to understand if one of them was damaged and in fact it doesn’t make a difference. I hope that support has still ideas but I mean there is not much left considering Gen1 is working like charm.
FYI
