Boot Quirk with WD EasyStore Portable Drive, Boot Options detects it under USB2 NOT USB3

[Kapt_Blasto]

Product: HP Pavilion 11 x360 PC, P/N: F8C35AV, upgraded to Windows 10 (acquired from eBay Seller)
Situation: Attempting to Boot UEFI/CSM from GPT formatted 5TB WD EasyStore (ID's under GDISK as 'easystore 2624').
(EDIT: CrystalDiskInfo 8.0.0 reports the model number for the 5TB WD EasyStore to be:
            'WDC WD50NDZW-11MR8S1' which identifies the Drive Underneath the plastic housing to BE....
            (According to a published WD spec sheet deciphering their Model Numbers, the 'D' in the '..50NDZW..')
             'Enterprise SED (Self-Encrypting Drive}/ WD RE'
             Which after some Googling makes me to believe that This EasyStore is
             .....an 'exclusive-rebrand-for-Best-Buy-Stores-ONLY' WD 'My Passport (Ultra?)' with rubber feet added to prevent 
             slippage on a table or other surface.
             As you may have heard, not only does the Model supposedly come with AES Encryption, it also has

            the controversial SMR (shingled Magnetic Recording) that many NAS users are having problems with today.
            AND....instead of a conventional SATA to Micro USB3-B connector, it has the Micro USB3-B connector, in the
            SATA's place,  which makes NAS potential pointless, and with SMR, and SED, disassembly, or 'Shucking' for
           data recovery or forensics, impossible. 
           The Bare drive, itself, can be seen sold in various places for $275-$300 US.
           ....but whether all this, or more specifically the SED, or even the GPT format, prevents the Computer 's UEFI
           in legacy Mode to detect the Drive when connected to the USB3 port... is unclear. 
           While It CAN be detected in any of the computer's USB 2.0 ports.... THIS is unsatisfactory.
           I bought This Laptop, And this Drive for the ability to BOOT from it, USB3 or SUPERSPEED style, 
           and have touchscreen capability.
            Guess the old adage, "Can't have your cake and eat it, too!" comes to mind....

-----------------------------------------------------------------------------------------------------------------------------
Procedure:  While in Windows 10, accessed NEW 5TB WD EasyStore, acquired from Best Buy, connected
                       to USB-SS (USB3) port.
                      Backed up all WD software to another Drive.
                      Repartitioned Drive, (while in VirtualBox 6.X/VMUB, with UBUNTU guest VHD, using GParted)
                      to make bootable with Grub 2.0.4, with intent to make Drive a MULTIBOOT portable.
                     ----> Made new GPT disklabel, Created Unformatted 10MB BIOS_BOOT partition
                                for Grub's Core.img to be.
                     ----> Created New 32GB FAT32 partition to be Boot/EFI, 
                     ----> Created New 32 GB NTFS partition to be BOOT_LEGACY

                     With these three partitions on it and with GRUB was able to boot drive while in VirtualBox/VMUB to 
                     GRUB menu.
Then, Restarted Computer, pressed ESC, and then pressed F9:
 PROBLEM: UEFI/CSM cannot detect BOOTABLE GPT Drive when connected to USB3 port.
Workaround: Powered down Computer, plugged Drive's USB3 cable into USB2 port, and
computer detects it BUT NOT when connected to USB3.
OBSERVATION: Other Portable Drive I have is MBR formatted with Grub2, and Computer Detects it in Both USB2 and 
                             USB3 Port.
Question 1: Is it because computer's UEFI (Both In Secure and CSM mode) refuses to detect Drive
                       BECAUSE it is GPT formatted, when connected to USB3,
                       and CAN detect it, when connected USB2?
Question 2: Is there some kind of conflict between WD EasyStore USB3 Controller Board and the
                       computer's UEFI detection of the drive, when it's connected to USB3,
                       but NOT when connected to USB2?, 
Question 3: Should I get a different portable GPT drive...or a different computer?
 

Question 4:Should I just shut up, and enjoy the slower speed of USB2, and like it better?!

Question 3: Isn't there a firmware tool for this drive, or this computer, that I MIGHT be able to obtain,
                      that *COULD* potentially FIX this problem?