Time for action – nix the mip-mapping
There's an unwanted sparkly effect that can occur when a 3D camera gets closer and farther away from a 2D image. A technique called mip-mapping reduces this effect. Unity creates a series of images from your texture that are each half the size of the previous image, which allows the computer to figure out the best pixel colors to show to the player, reducing the sparkle effect.
Because our title screen is presented as-is with no 3D camera movement, we're not really concerned about sparkle. And, as you can imagine, with all those extra images, mip-mapping requires a decent amount of extra memory for storage. As we don't need mip-mapping—adding that extra bulk—let's disable it:
With the "title" texture image selected, find the Generate Mip Maps checkbox in the Inspector panel.
Uncheck the box.
Click on Apply to save these changes.
The rest of the images that you imported should not be mip-mapped, but there's no harm in checking them for peace of mind.
