Bitdefender Total Security 2017 kills my pc

Hi. I have only had bitdefender Total Security 2017 operational for 36hrs but I am already thinking of uninstalling. Following a totally bizzare installation process where I had to resort to using 2 email addresses because the one used during installation was not accepted at activation as it was (quote) "already in use" ??? and contact online help I eventually got to actually use it. Problem is the update service hijacks the whole pc for at least half an hour after boot up and bitdefender services don't load for around 15 minutes. During this process hard disk usage is 100% constantly and the computer is useless. I have turned off update in the settings permanently but when next booted it is back on set for 2 hrs ??.

I am still investigating controls etc. so can claim to be a newbie although I have used bitdefender before about 3 years ago. Are the problems I am having unique to me or are they familiar to anyone on this forum, better still is there a fix ???

TA

Computer:
      Computer Type                                     ACPI x64-based PC
      Operating System                                  Microsoft Windows 10 Pro
      OS Service Pack                                   -
      Internet Explorer                                 11.296.15063.0
      Edge                                              40.15063.0.0
      DirectX                                           DirectX 12.0
      Computer Name                                     PHIL-PC
      Date / Time                                       2017-05-13 / 10:56

    Motherboard:
      CPU Type                                          QuadCore Intel Core i5-6600K, 4400 MHz (44 x 100)
      Motherboard Name                                  Asus Z170M-Plus  (2 PCI-E x1, 2 PCI-E x16, 1 M.2, 4 DDR4 DIMM, Audio, Video, Gigabit LAN)
      Motherboard Chipset                               Intel Sunrise Point Z170, Intel Skylake-S
      System Memory                                     16277 MB  (DDR4 SDRAM)
      DIMM1: Micron CT4G4DFS8213.8FA11                  4 GB DDR4-2133 DDR4 SDRAM  (19-15-15-36 @ 1066 MHz)  (18-15-15-36 @ 1066 MHz)  (16-15-15-36 @ 1066 MHz)  (15-15-15-36 @ 1066 MHz)  (14-14-14-35 @ 1037 MHz)  (13-13-13-32 @ 962 MHz)  (12-12-12-30 @ 888 MHz)  (11-11-11-27 @ 814 MHz)  (9-9-9-22 @ 666 MHz)
      DIMM2: Crucial CT4G4DFS8213.C8FAD11               4 GB DDR4-2133 DDR4 SDRAM  (20-15-15-36 @ 1066 MHz)  (18-15-15-36 @ 1066 MHz)  (16-15-15-36 @ 1066 MHz)  (15-15-15-36 @ 1066 MHz)  (14-14-14-35 @ 1037 MHz)  (13-13-13-32 @ 962 MHz)  (12-12-12-30 @ 888 MHz)  (11-11-11-27 @ 814 MHz)  (10-10-10-25 @ 740 MHz)  (9-9-9-22 @ 666 MHz)
      DIMM3: Micron CT4G4DFS8213.8FA11                  4 GB DDR4-2133 DDR4 SDRAM  (19-15-15-36 @ 1066 MHz)  (18-15-15-36 @ 1066 MHz)  (16-15-15-36 @ 1066 MHz)  (15-15-15-36 @ 1066 MHz)  (14-14-14-35 @ 1037 MHz)  (13-13-13-32 @ 962 MHz)  (12-12-12-30 @ 888 MHz)  (11-11-11-27 @ 814 MHz)  (9-9-9-22 @ 666 MHz)
      DIMM4: Micron CT4G4DFS8213.8FA11                  4 GB DDR4-2133 DDR4 SDRAM  (19-15-15-36 @ 1066 MHz)  (18-15-15-36 @ 1066 MHz)  (16-15-15-36 @ 1066 MHz)  (15-15-15-36 @ 1066 MHz)  (14-14-14-35 @ 1037 MHz)  (13-13-13-32 @ 962 MHz)  (12-12-12-30 @ 888 MHz)  (11-11-11-27 @ 814 MHz)  (9-9-9-22 @ 666 MHz)
      BIOS Type                                         AMI (07/17/2015)
      Communication Port                                Communications Port (COM1)
      Communication Port                                Printer Port (LPT1)

    Display:
      Video Adapter                                     Intel(R) HD Graphics 530  (1 GB)
      Video Adapter                                     Intel(R) HD Graphics 530  (1 GB)
      Video Adapter                                     Intel(R) HD Graphics 530  (1 GB)
      3D Accelerator                                    Intel HD Graphics 530
      Monitor                                           Dell 1704FPT (Analog)  [17" TN LCD]  (W4916539AA0C)

    Multimedia:
      Audio Adapter                                     Intel Skylake HDMI @ Intel Sunrise Point PCH - High Definition Audio Controller [D-1]
      Audio Adapter                                     Realtek ALC887 @ Intel Sunrise Point PCH - High Definition Audio Controller [D-1]

    Storage:
      IDE Controller                                    Intel(R) 100 Series/C230 Chipset Family SATA AHCI Controller
      Storage Controller                                Microsoft Storage Spaces Controller
      Disk Drive                                        TOSHIB  DT01ACA100 SCSI Disk Device  (931 GB)
      Disk Drive                                        TOSHIBA DT01ACA100  (1 TB, 7200 RPM, SATA-III)
      Optical Drive                                     TSSTcorp DVD+-RW TS-H653A  (DVD+R9:8x, DVD-R9:8x, DVD+RW:18x/8x, DVD-RW:18x/6x, DVD-RAM:12x, DVD-ROM:16x, CD:48x/32x/48x DVD+RW/DVD-RW/DVD-RAM)
      SMART Hard Disks Status                           OK

    Partitions:
      C: (NTFS)                                         931.1 GB (682.8 GB free)
 (NTFS)                                         931.5 GB (251.7 GB free)
      Total Size                                        1862.6 GB (934.5 GB free)