PC World - USA (2021-02)

82 PCWorld FEBRUARY 2021

REVIEWS TESTED: NVIDIA REFLEX

you’ll need to enable experimental features in

GFE, as well as the “in-game overlay” option.

Once that’s done, you need to press Alt +

Z to summon the GFE overlay. Select the

Performance option, and in the Performance

tab that appears,

click the tiny gear

icon next to the

“Performance

overlay” option.

You’ll see a lot

of options. Select

Performance,

choose your

overlay position,

and select Latency.

Now, when you

press Alt + R the

Reflex Latency

Analyzer overlay

will appear onscreen.

You also need to

use your monitor’s

menu tools to tailor

the technology to

your specific games,

and the specific

animations you’re

tracking to measure

latency. Reflex

Latency Analyzer

works by tracking the

luminance of a

specific part of the

screen—typically a muzzle flash. It then

calculates how long it takes for that area to

change after you click your mouse, to

determine overall system latency. Nvidia’s

Reflex SDK for games includes a “latency

How to set up Nvidia’s Reflex Latency Analyzer overlay.

This Nvidia-supplied screenshot shows the Reflex Latency Analyzer monitoring

box over a muzzle flash in Destiny 2.