I'm doing these from memory, so please correct me if I'm wrong on any of them.
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Anti-Aliasing - without getting too complicated, this basically 'smoothes' out all the jagged edges on everything. For example, on on the guy in the background in your picture, you can see that his hair has a jagged line around the edge. There's a similar line between your character's shirt and their arm. Turning anti-aliasing on will smooth that out, though it might reduce your frame rates.
Disable V-Sync - disables 'vertical sync', which means that the game may refresh at a different rate than your screen. Turning this off provides increased performance, but may produce 'tearing' in the middle of the screen due to the different refresh rates.
Scale LOD with Frame Rate - Scales the level of detail with the frame rate, meaning that if you're getting a low frame rate, theoretically the game will lower the draw distances of objects in order to maximize the framerate. I've never actually seen this setting do anything, but that doesn't necessarily mean that it doesn't work as designed.
Load Sector LODs - I have no idea about this one, but I'm guessing that it has something to do with how much of the game's textures are physically loaded at the time that you jack into the Matrix. It seems to me that with it turned off, there's more lag transitioning between districts, but less lag at initial loading time. That might just be the time of day in which I decided to test it, though.
- Void
