Okay, that is a lot of things to comb through, and I definitely will go through every single thing people have said here. It's crazy how perceptive you are.
A few people have mentioned freezes, and this is the most concerning to me. It's very hard for me to replicate freezing or crashes, because the game has never crashed once for me the entire time I've been developing and testing it. These are very likely issues related to hardware. After reading stories about it, playing RPGMaker games is just an impossible nightmare for some people.
After googling it, I've found this:
You must be registered to see the links
Edit: Unfortunately the above thread didn't work, but I found a similar plugin that does the same thing. Hopefully that fixes some of the issues people have with graphics not rendering.
My biggest regret, without fail, is using RPGMaker. It's not exactly surprising to me that I'm having to edit the engine's javascript just to prevent crashes.