As long as games stick to 320x256 or 640x256 (320x200 or 640x200 NTSC) then you'll be bypassing the flicker fixer. It's the FF that often makes fast moving objects seem gritty.
Also, with my Eyetech EZ-VGA Plus external scandoubler/FF I get a much better display in NTSC (PAL gives me tiny horizontal lines through the display).
Not many games will use 640x512 or 640x400 as even AGA was never designed for this - it's far too slow. You can play Napalm in Hi-Res Laced but don't expect super responses from your units. For RTG games it's best to stay well clear of Multiscan:Productivity as that has a 31KHz horizontal refresh which drains performance.
I'm wondering if games like Myst work on AGA and if so do they use 640x512 (not much movement in that type of game anyway).
My scandoubler gets ridiculously hot too and when I used PAL it would often squeak and crash the Amiga. Not so in NTSC. I'm thinking this was to do with the potentiometer or a capacitor not quite getting along with the video out.
