Nope: Be like me, I have the time, so just start expermenting. I found that making any changes that are not listed, causes trouble. Most of the time the sim justs freezes up, so I turn the machine off and then when it reloads, I go to config CFS3 and put it safe mode and start all ober again. Ofcourse this is for people like me that have a winter to kill. I get my 19-20 fps and I am happy with it. Trapshooting season is coming and I will put it away untill next winter, by then MS should have most of the bugs gone. I am running on a P4PE mobo, 1 gig of ram and a r-9000 pro. everything is set at 5's. I am having a r-9700 installed soon. The card failed to load and the guys at Explosives Lab. com, said I had a bad card. sent it back and they are going to send me a new one. Googlegear is selling them cheap, maybe the failure rate has caused the low price.