Vague explanation of why this works

Enable Bloom = 1 Enable UIBlur = 1 Enable DoF = 1 TerrainPageinSpeedStill = 6 TerrainPageinSpeedMoving = 3

It would seem that the Graphics Profile hold predefined values for the afore-mentioned lines along with the exposed graphics settings. At the lowest quality setting, the unexposed settings match the ones you've just read about in the previous section. At highest (Ultra) graphics settings the lines look like this:The TerrainPagein* lines seem to have the biggest effect, causing major FPS loss and great input lag. Iit's got to do with how many frames the engine tries to pre-render or how much memory it allocates... I don't know. What I do know is the effect on the overall experience this causes is VERY noticable.The Bloom, UIBlur and DoF settings have minor but still, slightly noticable impact. You may leave them at 1 if you don't mind losing a few frames.