Just an update on my original post:
I am almost 100% certain now that anything 3D is locked at 1024x768
I've tried the SH3 res fix.. doesn't seem to work.
I've searched through the config files and other files to find a fix and cannot find anything obvious.
It seems that anything 2D is rendered at the set resolution - in my case 1920x1200 - for example on the navigation map screen everything excluding event cameras is at full resolution.
A programmer friend of mine thinks that it would actually be more difficult for the devs to render the 3D in this way (he thinks they are rendering to a back buffer first rather than direct rendering) so he suggests that they could probably fix it if they chose to.
For me the problem is disappointing to say the least. I have gone back to SH3+GWX with the old SH3 res fix to run at 1920x1200 for now.. imho it looks, in the main, better than SH4.
The problem isn't a complete show stopper but it is just ludicrous that at 1920x1200 distant objects and even the sub's railings look pixellated.
Here's a shot I took of Sh3 with GWX at 1920x1200.. no jaggies or pixellation.. AND NO AA!! for those of you that think this is an AA problem
[img=http://img59.imageshack.us/img59/8100/sh3xe0.th.gif]
Interestingly if you enable the software AA at 1920x1200 (shift-pageup/dwn I think) in SH3 it starts to look more like SH4! I've tried various key combinations in SH4 but can't find anything to turn off s/w AA (if it's there at all)