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[Troubleshoot] Why Vsync had better latency than frame cap with Freesync? [FIXED]
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Re: [Troubleshoot] Why Vsync had better latency than frame cap with Freesync? [FIXED]
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- Chief Blur Buster
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Re: [Troubleshoot] Why Vsync had better latency than frame cap with Freesync? [FIXED]
Unless you have a very good reason to do so (e.g. non-VRR content that doesn't work well in VRR), you will always have lower lag with 60fps at max-Hz.
Not all displays refresh all pixels at the same time -- www.blurbusters.com/scanout for high speed videos.
And video cables don't transmit all pixels at the same time. A single frame could take 1/60sec to transmit (60Hz) or 1/144sec to transmit (144Hz)
On a 144Hz VRR display, 60fps would have a scanout latency of 1/144sec, typically both on the cable and on the panel itself (ideally, they're the same). That means a frame will refresh the panel in 1/144sec, even if the refreshes are at an interval of 1/60sec apart.
Lowering your Hz to 60fps will throttle the cable scanout to 1/60sec. Which means 1/60sec for frame transmission from first pixel through last pixel.
Keeping max Hz VRR, will speed up frame transmission (scanout over cable) and refresh (scanout on panel).
Head of Blur Busters - BlurBusters.com | TestUFO.com | Follow @BlurBusters on Twitter
Forum Rules wrote: 1. Rule #1: Be Nice. This is published forum rule #1. Even To Newbies & People You Disagree With!
2. Please report rule violations If you see a post that violates forum rules, then report the post.
3. ALWAYS respect indie testers here. See how indies are bootstrapping Blur Busters research!