SYNC FAILURE: Unable to VSYNC

[masterboss]

Hi Everyone,

I have a dual setup with 2 AOC G2790PX (1080p 144hz). I have Gsync on and Vsync on at Nvidia control panel, refresh rate set at 144hz and when I try any Test UFO I get the following message:
SYNC FAILURE: Unable to VSYNC. Try closing all apps and browser tabs

The test fails on both monitors, I closed all the windows and tried in different browsers with the same result. The test also fails if I use only one monitor (disconnecting the other one). I am using Windows 10 up to date and I changed the display port cables as well.

Can someone help diagnose the problem?

[Chief Blur Buster]

Check chrome://gpu

Is GPU acceleration turned on?

Also, post a screenshot of www.testufo.com/animation-time-graph

[masterboss]

Thanks for that, this is the result from chrome://gpu

https://imgur.com/a/2OaTamT


Also GPU acceleration is on at chrome.

[Chief Blur Buster]

Holy frametime spikes, batman!

Your system probably has some problems that needs fixing. Your games are also lagged by these background surges probably. This isn’t a refresh rate problem and probably isn’t a browser problem.

Try doing the usual tricks like:
- Exiting all system tray apps
- Cleaning cache
- Disabling all browser extensions
- Temporarily disabling all RGB software.
- Figuring out if Task Manager shows any background software suddenly spiking in processing
- Upgrading graphics drivers

Low lying apple test:
- Fresh reboot with SHIFT key (no system tray apps), launch a freshly installed web browser

[masterboss]

Hey, thanks for the help!

You were absolutely right the rgb software was the cause for those spikes. Is that normal though or happens to everybody? Should I just get rid of the RGB?

Cheers

[Chief Blur Buster]

You were absolutely right the rgb software was the cause for those spikes. Is that normal though or happens to everybody? Should I just get rid of the RGB?

.... I was right just by looking at the graph!

Different brands of RGB has less overheads by several orders of magnitude. My Razer keyboard custom RGB (ripples from keyboards) has zero impact on TestUFO.

Disable all your RGB and test one RGB accessory at a time, measuring impacts on TestUFO. Find the RGB that kills your CPU and get rid of it. Purchase a different RGB brand/accessory that eats zero or near-zero CPU. RGB animators need to be configured to lower priority than everything else too, so adjust the priority of your Startup software that controls RGB.

Latency purists (paid esports) may wish to avoid software-animated RGB where possible since those spikes represent latency spikes. Unless running sponsored equipment with mandatory software-animated RGB, then complain to your sponsored-equipment vendor if there's RGB performance (you've got monetary pull if you play paid esports).