I'm a newcomer to RCTIII and the computer I use is not that fast. Is there a way to stop the sun going down while playing the senarios? That would eliminate the need for lighting that slows everything down.

Thanks.

its not the sun that actually does the lighting, its the virtual lighting that surrounds the camera while you view your park. By changing your performance settings to performance or lower you can eliminate or turn down the amount of lighting used in the game, and in turn, the lag

It youre using the custom scenario mode like i do.Change the opening times of your park, this will elimate your night-time lag.