How To Reduce Input Latency When Using Frame Generation - V-Sync vs RTSS

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Have you ever wondered which method of limiting your frame rates provides the best experience? Today we'll be testing v-sync, or vertical sync against manually capping your frame rate by using an external 3rd party application, like Riva Tuner Statistics Server, included with MSI Afterburner.

We'll be testing with and without DLSS 3 Frame Generation in Cyberpunk 2077: Phantom Liberty, and Robocop: Rogue City, and then also test the differences between using a framerate cap and v-sync.

When using DLSS 3 Frame Generation it's not possible to enable V-sync (vsync) in game, so you have to use the Nvidia Control Panel to force v-sync on.

Also, using RTSS with the "async" option next to the framerate limiter causes very high input latency. In this video we also show you how to resolve that so you can still continue using RTSS as a frame rate limiter without increasing the input latency when using DLSS 3 Frame Generation.

System Specs:

Intel Core i5 14600KF @ Stock
Palit Dual Nvidia GeForce RTX 4070 Super @ Stock
Gigabyte Gaming X AX Z790 Motherboard
G-Skill 32GB DDR5 6400 Mt/s CL32 Memory
Corsair HX850i Power Supply
Windows 11 Pro
2TB PCIE Gen 4 Nvme Drive
Game Mode and ReBAR enabled
Dell 27" 1440p 165Hz IPS Monitor

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Timestamps:

0:00 - Using NVCP to enable V-Sync
0:34 - How does Nvidia Reflex impact frame rates?
1:49 - Cyberpunk 2077 | V-sync on, DLSS FG Off
2:20 - Cyberpunk 2077 | RTSS FPS Cap On (async), DLSS FG Off
3:25 - Cyberpunk 2077 | V-sync on, DLSS FG On
3:50 - Cyberpunk 2077 | RTSS FPS Cap On (async), DLSS FG On
4:36 - How to Improve Input Latency by using Reflex in RTSS
4:51 - Cyberpunk 2077 | RTSS FPS Cap On (Reflex), DLSS FG On
5:22 - Robocop | V-sync on, DLSS FG On
6:01 - Robocop | RTSS FPS Cap On (async), DLSS FG On
8:02 - Robocop | RTSS FPS Cap On (Reflex), DLSS FG On