Mistress gave me a project to work on where i need to become a semi-expert on the tweaks and settings in SL preferences. Once i have some answers that are relevant, timely and valuable i will post them here (after sharing them with Mistress and getting Her permission of course).
So the challenge is that SL changes things in there (Preferences) so frequently that any resources that are published about how to set things for the best performance are out of date almost as soon as they are printed.
Even SLs own help button provides partial and out of date information.
Even if i do find current, relelvant information it will be a huge challenge to condense it to a meaningful small mountain of data. Of the 5 or 6 pages that Mistress asked me to look at, just one page has all of this: