Reply To: Graphic filter in FBA? I want to blur the pixels.

[Floob]

lr-fba uses hotkeys in the same way as all the other retroarch based libretro cores.

Please see this video on how to use hotkeys.
(I wouldnt recommend editing the main retroarch.cfg at all to be honest)

And for the new paths in RetroPie 3

If you watch those 2 videos, you’ll know just as much as me on the subject (which isnt that much! :) )