Whether or not V-sync is useful depends on the presence of any tearing. If the screen tears, you should probably use V-sync, otherwise, it's safe to leave it off. AA (SSAA or MSAA) won't do a whole lot of good for 2D games like this, if any.
The problem is the game's sprites were designed for the GC's native resolution, which is far smaller than 1080p. The game's low-res textures basically get stretched. One solution is to make high-res textures of your own, but that's quite an investment of time.
The problem is the game's sprites were designed for the GC's native resolution, which is far smaller than 1080p. The game's low-res textures basically get stretched. One solution is to make high-res textures of your own, but that's quite an investment of time.