Most recent, and Vulkan isn't enabled yet in the game, it's using a wrapper until they can work out how to get it working.
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This shows a significant gain from 16.3.2 to 220.127.116.11:
As black_zion said, you should use the latest, which is 16.5.3.
So the latest driver as TEXTURE problems and ATI is working on it . You will see GRID LINES all ove the game
And valkan API will be released next patch