Final Fantasy IV : The complete collection

[TheDax]

Let's take this one step at a time:

Quote:Lightning and fire spells drag lines and look terrible

Nothing you can do on your end to fix it. It's related to a PSP GPU feature called "Bezier curves", which we don't emulate properly yet.

Quote:The white line on the world map is present

Another thing you can't remedy on your own. It's a known graphical glitch. As for the cause, I don't think we know why yet.

Quote:for example shake like lavos from chrono trigger is coming out of the ground

Disable Hardware Transform.

As for the overlapping thing, perhaps mess with the Disable Stencil Test or Always Depth Write hacks under Graphics(near the bottom on newer development builds, it's not in 0.9.1 official). If neither fix it, then there's nothing you can do right now.

Sorry if the answer disappoints, but FF4 isn't really ready for prime-time yet.