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Doom Graphics Performance Tweak Guide

By: Sean Ridgeley | Guides | Posted: Jul 1, 2016 1:10 am

Chromatic Aberration

 

Chromatic Abberation is atmospheric visual effect that distorts the game image, the result of which is a bit like viewing a game or movie in 3D without the glasses.

 

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The benchmark shows a small but definitive impact on performance when this setting is enabled. As a non-essential effect, it makes a good candidate for tweaking. While some are sure to enjoy the subtle tension it adds to the atmosphere, many will prefer a crisp image. If so, you'll benefit from a few frames in opting to disable it.

 

doom-graphics-performance-tweak-guide

 

 

 

Field of View

 

One of the more popular and important settings, Field of View (FOV) lets you adjust how 'wide' your perspective is. At the high-end, you see more, but accuracy can be more of a challenge, and depending on your setup, you may get 'fisheye.'

 

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The benchmark shows FOV has a major performance impact in Doom, most drastically on the maximum FPS when moving from 110 to 130. On a standard 1920x1080 monitor, 90-100 is recommended (not considering performance); if you're desperate for more frames (assuming it doesn't cause you headaches and/or other issues, as it does for some), keep it at 90.

 

doom-graphics-performance-tweak-guide

 

 

Overall Quality

 

The presets allow for easy changes in visual fidelity in performance by affecting all graphics settings. They are imprecise and don't cater to individual preferences, however, so it's very unlikely you'll see the optimal result by playing with these, but it's useful to observe the cumulative effect of changing multiple settings at once.

 

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The screenshots show Doom scales well visually, starting with rudimentary lighting, shadows, and textures and ending with superb fidelity all around coupled with impressive use of effects like Ambient Occlusion.

 

doom-graphics-performance-tweak-guide

 

Very much in line with the visual results, performance scales steadily upward as you decrease this setting. The biggest change is seen in minimum FPS, which increases by 6-9 when moving from Ultra-High to Medium-Low. A strong minimum framerate is imperative for enjoyable gameplay, so if you don't want to go into extensive tweaking but do need to increase this number, go with Low, or Medium if you can afford it.

 

 

Resolution Scale

 

This setting allows you to render the game at a low resolution than you monitor natively supports, then upsample it for improved performance at the cost of image quality.

 

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Observing the text on the left and right screens, the console as a whole, the moisture on the window, and the structures and sun outdoors, it's clear 75 reduces fidelity majorly, and 50 even more so.

 

doom-graphics-performance-tweak-guide

 

The benchmark reveals reducing this setting offers monstrous gains to framerate. Even so, it affects the entire image and pretty severely, and so should be a last resort. If after all tweaking you still require a boost, look to this setting to gain you however much of one you need.

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