New installation (never been installed before) English 1.22 download via GOG Galaxy

Windows 10 Home 64-bit 16GB RAM
Nvidia GeForce GTX 970 driver version 368.39
Acer B273HU 2048*1152

New game, allowed all cut scene videos to play without interruption
Gameplay starts but there are transparent textures on all characters
The silhouettes appear as body models only e.g. no indication of hair although jewellry/accessories are visible and seem to have correct textures
Skip through several cut-scenes
Some character silhouettes now showing outline of clothing but all clothing is also transparent
Jewellry/accessories are still visible

Exit game
Verify/repair installation reported no issues & did not download anything
New game again
Still everyone is transparent

Exit game again
Verify/repair installation still reports no issues & did not download anything
Reboot
New game
Still transparent

Exit & reboot again
The problem seems to have fixed itself.