Having one more level of graphics quality: lowest would decrease the lags. What I mean is in FSC for example I always have lags in rooms with flames and fire, so what if just replace the flames animation with just simple animation. Also there are a lot of details (like wind, Vog coat's fire trace) that I may want to sacrifice to get a better response of the system.
So instead of 3 possible graphics qualities[ low/medium/high ] add one more with 'lowest' graphics quality that omits most of the effects that don't have functions in the gameplay. I suggest this because I already have played the game in high quality and I know how the things look, so its ok for me to have low graphics quality in order to get better gameplay.

What do you think, is it hard to implement?