No It's Salt

Based on the Jimmy Neutron "Sodium Chloride" Meme this statement is used to express that the poster has scientifically explained something in an unnecessary, obvious, or otherwise annoying fashion. Similar to Um, Actually except it specifically refers to scientific statements.

ME: I don't like the SMAA 2x setting, it makes the game look blurry

Rando: UM ACTUALLY, It’s a technique used to smooth otherwise jagged lines or textures by blending the color of an edge with the color of pixels around it. The result should be a more pleasing and realistic appearance, depending on the intensity of the effect. The SMAA 2x adds blur to lines that's what it does. Overall in any game certain antialiasing will make things look more blurry

ME: No it's Salt