Final Fantasy II

[LunaMoo]

As for 4xHQ it's an upscaling effect, if you don't know how it should look like, maybe you should not use it at all as it add's rounding(althrough weaker from 5xBR) to the upscaled output and that's something which many people hate.
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Edit: Just in case since I made the most recent changes to this crap, I checked it with this game, here's some comparison:

5xBR:


4xHQ:


Nearest neighbour(aka upscaled without any fancy effect):


(click to get full res)

And yeah it works perfectly fine, that's how 4xHQ it should look like, doesn't make everything as round as 5xBR, but still it's doing very similar job as that's what it was designed for. Ofc upscaling effects used as post process will not have their full effect on stretched graphics, so not all 2D graphics will really look ok with it and 3D elements will always look bad;p.
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In older versions, especially in those ported FF games it varied from not doing anything(as initially it wasn't doing any scaling) to requiring manual tweaking per-game. As far as I can tell it works as it should now, ofc it's to be used in 2D games only.


The problem with AMD drivers, as anyone can read here was already fixed. Unfortunately there was some big feature update for amd drivers recently and I guess release of "minor"(aka not affecting commercial pc games) fixes got delayed. You basically have a choice between installing much older ogl drivers and waiting for the fix to be released.
It'll most likely never be fixed on ppsspp side, while we do have some workarounds for other brands(yes including green team), driver problems that were officially reproduced and fixed aren't really worth working around.