Best FPS=(Hertz*2)+1?

Everything about latency. Tips, testing methods, mouse lag, display lag, game engine lag, network lag, whole input lag chain, VSYNC OFF vs VSYNC ON, and more! Input Lag Articles on Blur Busters.
Post Reply
Posts: 2
Joined: 10 Nov 2019, 07:46

Best FPS=(Hertz*2)+1?

Post by HM204DTA » 10 Nov 2019, 07:51

For example, if you have a 144Hz screen the optimal FPS (using the common formula for Source) would be

289fps ~fps_max 300

FROM: ... samiz1337/

User avatar
Chief Blur Buster
Site Admin
Posts: 7780
Joined: 05 Dec 2013, 15:44
Location: Toronto, Ontario, Canada

Re: Best FPS=(Hertz*2)+1?

Post by Chief Blur Buster » 10 Nov 2019, 14:00

It depends on your goals:

-- Latency
-- Microstutter
-- Low-Lag VSYNC ON
-- Synchronized versus unsynchronized.
(i.e. RTSS S-Sync is kind of a "synchronized" VSYNC OFF).

There is a beat-frequency behaviour and slow-rolling tearline behaviour when you're too exact (but still unsynchronized) with VSYNC OFF

There are some situations where you want an ultra-tiny differential and some situations where you want a larger differential.

GSYNC / FreeSync / VRR often works best with a 3fps below Hz. VSYNC OFF often works best with ultrahigh frame rates. Double framerate as Hz with a small differential to avoid beat-frequency side effects, is a common tweak with CS:GO because CS:GO can often easily run at twice Hz. But if you are using a lower Hz (e.g. 60 Hz or 75 Hz) you can even use 3x differential or 4x differential and get even better results too. And if you're at 240Hz already, you may not be able to use 2x differential. Basically you want to find your valley framerate (e.g. dips to say ~240fps) and use that as your multiplier. So if you always run at >240fps on a 60Hz monitor, then you can cap at 4x differential with a small offset (e.g. 1fps or 2fps higher or lower) to help randomize the tearline positions (instead of a slow-rolling tearline).

There are many different goals why a bigger or smaller cap differential is needed.
Head of Blur Busters - | | Follow @BlurBusters on Twitter

       To support Blur Busters:
       • Official List of Best Gaming Monitors
       • List of G-SYNC Monitors
       • List of FreeSync Monitors
       • List of Ultrawide Monitors

Post Reply