No$gba emulator - no$zoomer 2.3.0.2 help

What do the EXTRA options do?

EX is a render enachers it seems, required only for the games said there it seems, on all else keep it off.The game titles optimize the emulator for the said games

but sometime the renderer make the game crash...

Then don't use it.

Use it only on specific games...Another question what does each option under EXTRA mean:From: EX0 -> EX5

I think each of it represent the Layers....

Layers? Only 0-3, or 4 layers per engine I'm afraid :)

what about the filter?can you explain more about it?