I heard rave reviews about 1.4 so far on other boards that are not concerned with surround gaming, but your comment about the town unloading concerns me. Is this saying it is not rendering your entire screen resolution? Is this something that might be a hard break that cannot be fixed with a memory tweak?
Usually what we see is this, the important part is the hall of the dead building and stuff around it:
Here's what happens when I adjust my point of view just a tiny bit further to the left:
It appears that Bethesda has acknowledged that this view has been considered one of the more challenging for the engine to render...so they've got some sort of trickery in play that tries to unload parts that wouldn't be seen by a single screen resolution...or they just did a poor job of things. Either way this is the only spot I've see this effect within and it does flip back instantly if you look more towards the building. Same thing happens if you're close to the pillar on the left vs everything that is usually drawn on that side but is considered obscured by it. I doubt people with single resolutions are ever going to see this, end result is they see higher FPS in this shot without seeing that the extra stems from having less of Whiterun being rendered that's in their point of view off screen.
This is definitely new in V1.4 and again this is the only spot I've seen such a thing happen so far. Either way the city comes back if you start to look in that direction and yah the FPS benefits are off the hook. Its a great patch no doubt, just kind of funny catching something like this and goes to show how they really aren't testing with or even really aware of triple screens anymore, which gives me a sad.