Well two things could be affecting Wipeout XL's performance:
1. I may still be slightly off with the root counters (timers on psx) that Wipeout seems to rely on heavily.
2. All these games will run better on a more proper build for a more recent Pandora devkit. I currently rotate and scale the screen, and the way I am doing rotation is hideously slow. Rotation of the video won't be needed once I get a newer devkit, or have someone with a newer devkit take a video.
So with what I said in #2, all games will be running faster on a retail Pandora. It's running really well, I must say, at stock speed and with a lot of extra code in place.
I could make a video without scaling and rotation to show you how much faster it runs, if interested.
As for games, I forgot about X-Com and Magic Carpet. I love those two games!
There's also TTD (Transport Tycoon Deluxe) for the Playstation.
So for round two, so far I have on my list Gran Turismo. Going through all the games listed here and comparing to what I have.