While some of this advice is good, some is quite questional
Don't touch Filtering, Hi-res Textures, Dithering, the resolution and screen smoothing if you don't want to.
I, for instance prefer Filtering and hi-res at 0, dithering and smoothing at off and resolution at my desktop's resolution.
Don't force your preferences on people
but yeah, I missed the other stuff (alpha multipass and mask bit), but while they should be on, I doubt the problems he was having are related to these 2 options...