I think there are 3 methods commonly used: zoom, resize window and resize your graphics.
The first method is the best in my opinion (described here), since you have to do nothing else than apply a few Start of layout events. Also it looks right on every machine, while resizing the window with the window object may cause blurriness due to filtering.
That being said, I'm having a bit of trouble to understand the following:
with the resolution set and also when zoomed in, no objects are "snapping to" the other pixels the way they should-- they just behave like they are objects that aren't only a couple pixels wide...
Could you elaborate / show a screenshot of what you mean? I do take it you have your sampling setting set to point in the properties? Default linear setting makes pixelart blurry.