Install 13.0-RELEASE on apuc2 - Root mount waiting for: CAM

Using the memstick image I have created a USB stick and modified the following settings on the USB. It ultimately hangs and just says
Root mount waiting for: CAM until it eventually sputters out with this error. I have tried both the top and bottom USB slots.

(probe0:umass-sim0:0:0:0): INQUIRY. CDB: 12 00 00 00 24 00
(probe0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(probe0:umass-sim0:0:0:0): Error 5, Retries exhausted
GEOM: new disk ada0
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <ADATA SP310 5.2> ACS-2 ATA SATA 3.x device
ada0: Serial Number 2G0320065595
ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 30533MB (62533296 512 byte sectors)
pass0 at ahcich0 bus 0 scbus0 target 0 lun 0
pass0: <ADATA SP310 5.2> ACS-2 ATA SATA 3.x device
pass0: Serial Number 2G0320065595
pass0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
pass0: Command Queueing enabled
GEOM_PART: partition 11 has end offset beyond last LBA: 62524959 > 62524915
GEOM_PART: integrity check failed (ada0s4, BSD)
GEOM_PART: partition 11 has end offset beyond last LBA: 62524959 > 62524915
GEOM_PART: integrity check failed (diskid/DISK-2G0320065595s4, BSD)
mountroot: waiting for device /dev/ufs/FreeBSD_Install...

[/boot/loader.conf

Code:
# force serial console
boot_serial="YES"
set boot_multicons="YES"
console="comconsole"
comconsole_speed="115200"
# wait longer for USB-stick root device
kern.cam.boot_delay="20000"
kern.cam.scsi_delay="20000"
# avoid igb netisr crashes
hw.igb.enable_msix=0
hw.pci.enable_msix=0
# mailing list
#vfs.root_mount_always_wait=1

/boot/device.hints

Code:
hint.ahci.0.msi="0"
hint.ahci.1.msi="0"

I have referenced endless blogs, posts, and mailing list seem to all say the same thing about settings:
 
I got lucky. I usually get a different error but the one I posted above made me consider writing a new USB stick. It now boots up totally fine using a different new stick.
 
Yes and slower sticks you might need delay via this loader setting.
kern.cam.boot_delay="10000"
I was having problems with this too and had to add delay.
Looking at your output I see you doubled the time. That is a good check.

Mine was failing at mountroot. I could see the device was detected late via cam message.
 
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