S!
Finally I found what happens with my crazy trackIR 4. My new eyeglasses. I have two. One for day by day (multifocal) and other one specially to fly (one focus). TrackIR´s camera is getting the brightness of my eyeglasses. I setted the light filter and IR brightness to the maximum but it still is getting eyeglasses brightness.
Well now I know what happens and now go ahead to find a solution.
Really, is very frustrating in the middle of combat your vision getting crazy. I lost a lot of combat by that.
If you have any idea how getting this solved please let me know.
I´ll back version 4 to try fix it.