Shadow issues with Shisui Body Armor

Frequency: allways
In-game time: day and night
Steps:
1. Equip any of the Shisui body armors ( in my case its teh Shisui Joi of Slaying )
2. turn the back of the character into the sun

Area of the shodow bug in red circle:

http://i1291.photobucket.com/albums/...psethmsfrx.png

Even if the back of the caracter is not turned into the sun die skin area is still darker than the rest:

http://i1291.photobucket.com/albums/...psqeol8efb.png

this is how the shadows look with the Summer Halter for reference:

http://i1291.photobucket.com/albums/...pshpqumtfh.png

at the front of the outfit are no shadow issues.



-=-=-=-=-=-=- System Information -=-=-=-=-=-=-

SYSTEM_OS Windows 10 Home 64-Bit-Version (6.2, Build 9200) (14393.rs1_release.170602-2252)
SYSTEM_CPU Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz (8 CPUs), ~3.5GHz
SYSTEM_CORE_NUM SYSTEM_CORE_LOGIC 8 SYSTEM_CORE_PHYSICS 4
SYSTEM_BIOS BIOS Date: 06/29/12 19:02:25 Ver: 04.06.05
SYSTEM_LANGUAGE Deutsch (Gebietsschema: Deutsch)
SYSTEM_MEMORY 16347.844MB
SYSTEM_VIRTUAL_MEMORY 134217727.875MB
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SYSTEM_STORAGE C:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 232.347GB SYSTEM_FREEDISC_SPACE 64.039GB
SYSTEM_STORAGE E:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 0.098GB SYSTEM_FREEDISC_SPACE 0.020GB
SYSTEM_STORAGE F:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 195.215GB SYSTEM_FREEDISC_SPACE 187.532GB
SYSTEM_STORAGE G:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 976.562GB SYSTEM_FREEDISC_SPACE 226.919GB
SYSTEM_STORAGE H:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 691.140GB SYSTEM_FREEDISC_SPACE 411.500GB
SYSTEM_DIRECTX_VERSION DirectX 12
SYSTEM_GRAPHICS NVIDIA GeForce GTX 1070
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY1
SYSTEM_GRAPHICS_CHIP GeForce GTX 1070
SYSTEM_GRAPHICS_MAKER NVIDIA
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SYSTEM_GRAPHICS_SHARED_VRAM 8173.922 MB
SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (60Hz)
SYSTEM_GRAPHICS_DRIVER C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_274d0ab8ee30c459\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_274d0ab8ee30c459\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_274d0ab8ee30c459\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_274d0ab8ee30c459\nvldumdx.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 22.21.0013.8189
SYSTEM_GRAPHICS_DRIVER_DATE 4/19/2017 02:00:00
SYSTEM_GRAPHICS_DRIVER_LANGUAGE Englisch
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SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_GRAPHICS NVIDIA GeForce GTX 1070
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY2
SYSTEM_GRAPHICS_CHIP GeForce GTX 1070
SYSTEM_GRAPHICS_MAKER NVIDIA
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SYSTEM_GRAPHICS_SHARED_VRAM 8173.922 MB
SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (60Hz)
SYSTEM_GRAPHICS_DRIVER C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_274d0ab8ee30c459\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_274d0ab8ee30c459\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_274d0ab8ee30c459\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_274d0ab8ee30c459\nvldumdx.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 22.21.0013.8189
SYSTEM_GRAPHICS_DRIVER_DATE 4/19/2017 02:00:00
SYSTEM_GRAPHICS_DRIVER_LANGUAGE Englisch
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_SOUND Lautsprecher (Realtek High Definition Audio)
SYSTEM_SOUND_DEVICE_ID {DE227713-CEEE-4DB7-8340-23F2D0FFFF50}
SYSTEM_SOUND_DEVICE_NAME RTKVHD64.sys
SYSTEM_SOUND_DRIVER_VERSION 6.00.0001.7560
SYSTEM_SOUND_DRIVER_LANGUAGE Englisch
SYSTEM_SOUND_DRIVER_DATE 7/15/2015 00:00:00
SYSTEM_SOUND Realtek Digital Output (Realtek High Definition Audio)
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SYSTEM_SOUND_DEVICE_NAME RTKVHD64.sys
SYSTEM_SOUND_DRIVER_VERSION 6.00.0001.7560
SYSTEM_SOUND_DRIVER_LANGUAGE Englisch
SYSTEM_SOUND_DRIVER_DATE 7/15/2015 00:00:00
SYSTEM_SOUND Realtek HD Audio 2nd output (Realtek High Definition Audio)
SYSTEM_SOUND_DEVICE_ID {8FE46D45-2611-4E64-A8F4-D3D15A5443B9}
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SYSTEM_SOUND_DRIVER_DATE 7/15/2015 00:00:00
SYSTEM_SOUND BenQ XL2720T-C (NVIDIA High Definition Audio)
SYSTEM_SOUND_DEVICE_ID {99AFC47E-2A40-4FD1-B93B-73F5C6D19A3E}
SYSTEM_SOUND_DEVICE_NAME nvhda64v.sys
SYSTEM_SOUND_DRIVER_VERSION 1.03.0034.0026
SYSTEM_SOUND_DRIVER_LANGUAGE Englisch
SYSTEM_SOUND_DRIVER_DATE 3/15/2017 00:00:00
SYSTEM_INPUT {6F1D2B60-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Maus
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 5 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6F1D2B61-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Tastatur
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SYSTEM_INPUT {FB3B5540-49C9-11E2-8001444553540000}
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SYSTEM_INPUT {FB3BA360-49C9-11E2-8002444553540000}
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SYSTEM_INPUT {A4C7B260-20E1-11E6-8001444553540000}
SYSTEM_INPUT_NAME ROCCAT Kova
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 573 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {FB3BA360-49C9-11E2-8003444553540000}
SYSTEM_INPUT_NAME USB Keyboard
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SYSTEM_INPUT {A4C7B260-20E1-11E6-8002444553540000}
SYSTEM_INPUT_NAME ROCCAT Kova
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {A4C7B260-20E1-11E6-8003444553540000}
SYSTEM_INPUT_NAME ROCCAT Kova
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