The problem is fill-in, where reflective surfaces slowly fill in with reflections as you move the camera. When there’s a reflective surface, screen-space reflections look at whatever is currently visible on screen and calculate the reflections based on that. Screen-space reflections are less demanding. There are two main types of reflections, screen-space reflections and ray-traced reflections, and you may find both in some games. Lighting doesn’t just cast shadows, it also creates reflections. Regardless of the technique, turning ambient occlusion down or off will increase your performance, and in some games, it will increase it by a lot. Some techniques for ambient occlusions are more demanding than lighting and shadows, but you can rarely tell which technique a game is using. Everything on the desk casts a subtle shadow with the setting on, and the desk is casting a shadow on the tucked-in portion of the chair. Below, you can see an example from Control with ambient occlusion turned on. It’s something you have to see to understand. Ambient occlusion details the shadows for how those objects interact with each other. A shadow map details the shadows for each object. Essentially, ambient occlusion deals with the shadows that objects cast on each other. Ambient occlusionĪmbient occlusion is related to lighting and shadows, but it requires a little more explanation. This is especially true at higher resolutions, where the game calls for higher resolution shadow and lightmaps. Regardless, turning down your shadow and lighting quality will improve your performance. Volumetric lighting is for things like god rays, while global illumination calculates a single light source, like the sun, for an entire scene. However, lighting touches a lot more settings, including volumetric lighting and global illumination. Lighting works in a similar way, where a lightmap determines how bright objects are in a scene from a given light source. You can see an example of that in God of War below. Shadow quality informs the resolution of the shadow map, and lower settings usually make shadows appear softer. That becomes a shadow map, which the game uses to cast shadows in the final image. Your GPU renders a scene that takes into account the light and objects to render the shadows. Baked-in shadows, which are static and not informed by a light in the scene, have very little impact on performance. I’m talking about dynamic shadows - those being shadows that come from a light source in the game. Shadows are demanding because they require your graphics card to render a second scene. You may find them as separate settings - and in games like Call of Duty: Vanguard, split across several settings - but they work together. Shadow and lighting qualityīy far the most demanding task for your graphics card is shadows and lighting. I usually set my FOV to 105 degrees, and most players will fall between 90 and 110 degrees. This is mostly relevant in first-person games, but it can useful in third-person games as well. Per-object motion blur is demanding on hardware, but it looks much more natural.įinally, FOV determines how wide the camera angle is. Turn it off in most games unless you particularly like the look. Camera motion blur has virtually no performance impact, and it looks terrible. There are two types of motion blur: Camera motion blur and per-object motion blur.
It doesn’t matter in most games, but it can make the difference in competitive titles like Counter-Strike: Global Offensive or Rainbow Six Siege. If the input lag is a concern, you can use an adaptive refresh rate monitor with AMD FreeSync or Nvidia G-Sync. The problem with V-Sync is that it introduces a hair of input lag.
That avoids situations where there isn’t a full-frame to display when the monitor goes to refresh, which is why screen tearing happens. It does so by syncing the refresh rate of your monitor to how many frames your graphics card is producing. V-Sync, or vertical synchronization, prevents screen tearing.
#HOW TO MAKE COMPUTER FASTER ANTIAILIASING PC#
However, they’re settings you’ll find in nearly every PC game, and you should always adjust them. V-Sync, motion blur, and field of view (FOV) shouldn’t impact your performance much, if at all. I’ll be writing about more than five settings, but these three are so easy that they barely count.
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