Many of these settings are highly subjective, so it's hard to give a rundown of what you should or shouldn't use. Hover over each option to view the tooltip and decide for yourself which options you want to toggle.

• If you are using OpenMW 0.48, run the OpenMW-Launcher, click Advanced, and take a look at each tab under that category.
• If you are using OpenMW 0.49, run the OpenMW-Launcher, click Settings, and take a look at each tab under that category.
• Check out the official documentation for these settings, as well as the rest of the documentation on settings to get a more complete idea of what can be done.