Lights pop on & off when approaching

[Tok84]

This happens only in interior as far as i noticed. The lightsources are popping in when i approach. But not only the distance is important, also the angle to how the camera is set according to the light source.

Here are 2 example screenshots:

 

 

 

 

 

 

I tried to experiment with the ini settings but without success.

 

Any suggestions? This is really killin the mood sometimes....