Windows PCIE Disk Passthrough

[nowjon]

Hello!
I'm having some issues moving my PCIE disk to a virtual machine. This is all happening on the same machine.
I installed Proxmox on a separate disk, booted it, and setup pcie passthrough.
I've passed through my Samsung NVME SSD via PCIe Passthrough but it will not boot.

This is my current config:

rgs: -cpu 'host,+kvm_pv_unhalt,+kvm_pv_eoi,hv_vendor_id=NV43FIX,kvm=off'
bios: ovmf
boot: order=hostpci3
cores: 8
cpu: host,hidden=1,flags=+pcid
efidisk0: local-lvm:vm-100-disk-0,efitype=4m,size=4M
hostpci0: 0000:67:00,pcie=1
hostpci1: 0000:04:00,pcie=1
hostpci2: 0000:05:00,pcie=1
hostpci3: 0000:02:00,pcie=1
machine: pc-q35-7.1
memory: 16384
meta: creation-qemu=7.1.0,ctime=1676864341
name: Windows
net0: e1000=3E:47:28:E0:F2:59,bridge=vmbr0
numa: 0
ostype: win10
sata0: local:iso/Windows.iso,media=cdrom,size=4671872K
scsi2: local:iso/virtio-win-0.1.229.iso,media=cdrom,size=522284K
scsihw: virtio-scsi-pci
smbios1: uuid=a465a6de-f78e-43f2-8e77-ed92d7a71064
sockets: 1
vga: none
vmgenid: b8c3ab1e-5cc6-4964-8f9c-5b8aa5edb206

If I instead pass the disk through as a sata device, it will boot though?

scsi5: /dev/disk/by-id/nvme-Samsung_SSD_970_EVO_Plus_1TB_S59ANS0N710143J,size=976762584K

The performance wasn't what I was hoping for so I wanted to try to pass it through but with no luck. Windows loads but says "inaccessible boot device" and reboots.
Here's the LSPCI entry for it

02:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983

I had decided to add it to be excluded from the OS in /etc/modprobe.d/vfio.con but this made no change

options vfio-pci ids=1002:73af,1002:ab28,144d:a808 disable_vga=1

#The first two are a gpu, ignore

I had thought this was maybe related to my Mobo's CPU slots, so I moved this NVME drive into a PCIe NVME adapter, see: https://www.amazon.com/gp/product/B07JJTVGZM/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1

Any help is appreciated!
Thanks!

Edit 1:
Also wanted to add, I can boot into this Windows install bare-metal.