Tbh I've always played on databases over 100k players on it so I've never really paid attention to the speed so much. It's subjective really, what one person finds fine someone else might find it sluggish. Also computer dependent of course. For me personally, the game world is important. The setup that Dreambuilder posted first would be a low database for me. Not unplayable at all but it would probably be as low as I would go. However your suggestion would be a no go for me, it just wouldn't feel big enough.