There are no Hack settings required for a natively supported WiFi/BT card. So if you have added any ‘fixes’ to your setup for the Broadcom card you would be advised to remove them.
I have 10 x Apple Broadcom WiFi/BT cards on PCIe adapters. These are a mix of BCM4360CD, BCM43602CS & BCM4360CS2 Apple cards. None of them require any patches or third party kexts to work in macOS, it is the whole point of using a natively supported Apple Airport card.
On a couple of these systems I have to use AirportBrcmFixup.kext and a boot argument, as the WiFi card uses the wrong country code for Germany (DE) if I don’t set the code as GB in the config.plist. But that is as far as I ever need to go with regards applying any ‘fixes. You should be in the same position with your card.
I would recommend you do the following:
1. Remove the PCIe adapter from your system
2. Remove the WiFi/BT card from the adapter.
3. Then re-assemble the adapter and card, checking that the antenna are secure on the card.
4. Try the PCIe adapter in a different slot, assuming you have one spare.
Doesn’t matter if it is an x1, x4 or x8 slot just use a different one to the current slot you are using.
Also don’t just tell us you have already done this, do it again if that is the case.