Hi. After reading a post from a Finnish guy, I decided to try the MCLK
graphics utility. The results were rather astonishing. Using S3spdup, I
got no improvements from my estimated frame rate, but a little tweaking
yielded an improvement from 18.2 to 21.3 in the estimated frame rate.
(Vid DRAM clk spd upped from 55 to 65 Mhz!) Improves Win95 performance
significantly too. But do read the instructions and proceed with
caution. It's available from "http://www.racesimcentral.net/~rliao/mclk.html".
I'm still tinkering with it trying to wrangle some more speed. If you're
too fast, the display will begin to display fractal-ish images across
the screen. Play with the parameters a bit, and the situation improves
until voila! no more marks.
Stanley