Is there an adjustment for speed on Major Havoc? I've played the game on a couple of dedicated machines and one felt faster to me than the other. Was this my brain playing tricks, or is there an adjustment?
I have heard that the boards that were shipped with the dedicated units had a higher clock speed than those for the conversions. This was done to accommodate the different refresh rates for the WG6100 vs. the Amplifone monitors (slower for the former).
If both units you played were dedicated, perhaps one had a board that was originally for a conversion unit.