I forgot that that monitor has a converter DIP box on it, so I'll have to try later (it's forcing a particular resolution) when I can find the DIP setting page again. In the meantime, though, I think it also depends greatly on how much RAM is installed. I was very fortunate to find a card with the full 8MB of option RAM installed (for a total of 10MB, including the built-in 2MB buffer). If yours is RAM impaired, maybe that explains the problem.