Good news: Ocarina of Time is more stable now. I can enter Hyrule Market, and also get into Ganon's castle. Only thing is that some parts are really messed up. Like that not all textures show. Namely the place right before the market and outside the Temple of Time. You can see lots of pretty colors... But no textures.
In general, I don't see much speedup in OoT, but in SM64 I do. The speed is really impressive even at the default clock.