Fresh install (as I've changed hardware and distro) Running Manjaro Linux Cinnamon, on an AMD A8-7650k, 16gb ram, AMD RX460 GPU
Created a windows 7 64 bit bottle.
Used the MaxVersionGL regedit (needed for AMDGPU)
Added d3dcompiler_47 manually to the DLL overrides and set it to native.
Copied The Elder Scrolls Online/game/client/x64/d3dcompiler_47.dll one directory up into client.
Everything seems to work great, less crashes than previous versions. Performance still isn't great, but it's playable!