Then I got a thought & went in AHIII Patch 7 & disabled AA under Post Lighting & left all else as set.
Then shut down the game, went in Crimson 16.10.2 drivers & set AA at the driver level, set TF @ High & left all else as set.
Then started AHIII Patch 7 & flew around.................
The game ran excellent w\o nary a hitch or glitch or anything...............butter
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Attachments below....................
I remember you had mentioned that you thought there may be a bug in the shaders causing this freeze................
Maybe the bug is in the AHIII client shader application of FXAA under Dx11......................
Just a thought......................
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Hope this helps you out...........
PS---I posted all this in this manner to separate the data to go w\ my postings as I couldn't attach more than 4 attachments in any single post.