I came across this on the Gamefaqs page for RPG Maker 2003, and it caught my eye:
Reducing Lag
You may notice that in events that have a lot of complex coding, or events that call others with complex coding, tend to lag when the game is played. This makes gameplay very annoying. To prevent this, insert a Wait of 0.0 seconds before and after the Call Event or group of complex coding. This will remove lag almost entirely.
I'm working on an "arcade" project with a bunch of friends. Basically, each of us is doing a minigame and putting into one RPG Maker project. There will be some fancy programming and other things, so lag/performance will be an issue.
My question to you all: In addition to the suggestion above, are there any other good tips that we can use to optimize performance? I'd like to get a "programming tips" document together for people who haven't programmed their games yet, so any suggestions that you can offer would be greatly appreciated.