Peter Boese
Premium
Can't say for sure with these weathers, but I did use SFX with the Natural Mod for a while and it did make a difference... but a negligible one IMHO. I don't feel like I'm missing out now by not being able to get it working. (Then again it only cost me 5-7fps, so if I could get it working again I'd probably use it.)
what i do with sweetFX is a little bit more brightness and contrast. i use the HDR-shader to lift up the exposure to a certain level and then i raise the dynamic to get more contrast. in the tone mapping i do some opposite thing. i reduce the dynamic with the gamma. both processes work different and so i got more control over the contrast-process. the result is that the midtones (mostly the vegetation) are nearly untouched and the rest (sky, horizon and the cockpit) has more contrast. this is just subtle and not really needed. for me this is the last 5% of available immersion...