Now you can get an unofficial patch for Fallout 2. It's called Fallout 2 unofficial v1.05 patch. Has anyone tried to play Fallout 2 with this patch? The patch claims that it should have fixed the bug that prevented you from getting the best ending for Gecko? So it means that it should be ok to optimize the reactor in Gecko. Also I'm not sure whether I should install the official patch first, and then the unofficial
