Real Navigation with a tiny bit of help?

[Xurf]

Salutations everyone,

I got a quick question regarding some customization of the game.
I'm playing SH5 with WoS mod 1.06 Update 04i.

I am learning to play the game with as much realism as I can handle.
At the moment I have Real Navigation enabled and in the settings I only have external camera on. (got to have that eye candy)

However I also have the Wind & Smoke addon. (something I hope to remove when I get better at intercepting and getting closer)

Now my question is. Is there a way to adjust the degree of error made by my navigation officer when using Dead Reckoning & Celestial fix?

(is celestial fix perfect in game?)
Thanks in advance for any info.