Well, that's odd... the graphic soft plugin you are using is very compatible. And i played LoD with no problems... at least 1 hour; haven't beaten it yet though.
Anyway, it's good to have a variety of plugs/emus/utilities and bioses. So if it one plug fails, you switch to other, switch emus or bioses and find the ones that really suits your needs for a certain game.
For a complete psx emulation pack, check
www.ngemu.com, in the section of playstation. I recommend to get the "latest" emulators like epsxe, pcsx, adri, etc, and dl the plugs they offer. Also they have a very good forum, worth checking out, about compatibility issues.
If you need more variety of bioses, just pm me and i'll send them to you, so you have more to experiment with; i'll be happy to help you.