99% of the roms load instantly - I chose Metal Slug 5 for the test because it's one of three games I could find that actually take long to load. I loaded that one on purpose. That game actually shows a progress on the screen while loading 1%...25%...50%...75% etc. That game and a couple that needed Chud files take longer to load.
The main reason I chose that game for the test was because we were hearing skipping in the audio. We installed a new video card and a soundblaster max card that I got for free (SCORE!!!) and that was the first time we were going to run Metal Slug 5 since the new hardware was installed and the video was on the screen.
As the video shows theres no jumping in the audio and the game plays fine. I'm going to use this game for testing on everything because it makes the machine work a lot harder than running Pacman for instance.
This is the only game I will have on my play list that doesn't load instantly. I'll put up another vid once I get back up to the house tomorrow so you guys can see its fast and awesome