I can offer but very little help.
When you get the choice of which Direct 9 or 11 to chose, I took 9. 11 is at a crawl like you say.
In Options, the only thing I see that could possibly help you is the Mouse sensitivity.
If you play with only the W key 99% of the time and use the mouse for direction and doing it slowly when panning left or right, maybe that can help you.
I did not use the A and D key and I backed away a very few times with the S key.