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Fast sync+ lightboost with uncapped fps

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Fast sync+ lightboost with uncapped fps

Postby kevzz01 » 26 Jul 2018, 17:20

Anyone running this setup? I’m playing PUBG with uncapped fps(144 is max) and fast sync on. Is this a good setup for an fps game? Does lightboost reduce the motion blur with this setup?
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Re: Fast sync+ lightboost with uncapped fps

Postby RealNC » 27 Jul 2018, 10:43

It's fine.
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Re: Fast sync+ lightboost with uncapped fps

Postby Sparky » 27 Jul 2018, 11:59

It's ok, but with fast sync you generally want to cap framerate at the highest sustainable multiple of refresh rate.
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Re: Fast sync+ lightboost with uncapped fps

Postby Chief Blur Buster » 27 Jul 2018, 14:11

Fast Sync looks good with LightBoost if you cap your framerate to equal refresh rate, or a multiple (twice refresh rate).

You have microstutter harmonics (beat-frequency effects) between frame rate and refresh rate.

And blur reduction (LightBoost/ULMB/strobing) amplifies the visibility of stutter. That's why strobing (LightBoost, ULMB, etc) looks more jittery.

To fix that with strobing while avoiding adding on too much VSYNC ON lag -- it is preferable to have "frame rate = refresh rate = strobe rate" -- and for slightly lower input lag with Fast Sync without adding strobed jitteriness -- try a frame rate cap of double the refresh rate when using Fast Sync (or the new graphics-card-independent RTSS Scanline Sync feature, to simulate NVIDIA Fast Sync or AMD Enhanced Sync)
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