Good to know - I'm not sure why it does this but more worryingly why there's a difference in behaviour between an external and internal EDID.. It's possible that it's to do with my Samsung display I've been testing it on. I haven't tested an internal EDID on my projector, only one on the vertex.. The Samsung doesn't have switchable quantisation levels (only Philips & Samsung do this as far as I know) so that might be the cause. I'll test on the projector and a Sony TV today and see what happens.