read the various troubleshooting FAQs throughout the section. all common issues in a game, if any, will be addressed in them and you can find several recommended configs by doing a search.
i will say that if you are not having any problems with your current config then it might be best to leave it as it is and not bother screwing around with the settings too much unless there is something you are actually looking to improve on, such as performance or visual quality.
i will say that if you are not having any problems with your current config then it might be best to leave it as it is and not bother screwing around with the settings too much unless there is something you are actually looking to improve on, such as performance or visual quality.