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Framerate locks to 30fps with vsync enabled in eyefinity
02-07-2019, 08:33 PM (Last edited: 02-07-2019, 09:17 PM by triplesync)
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RE: Framerate locks to 30fps with vsync enabled in eyefinity
(02-07-2019 03:03 AM)ToastyX Wrote:  
(02-06-2019 11:29 PM)triplesync Wrote:  No, this is not a monitor issue as vsync is handled by the GPU, so it's not synchronizing with the monitor correctly. Windows has always had issues with synchronizing multiple monitors with different resolutions or refresh rates. Are you using FreeSync?

I don't see why not. Changing the totals would only affect the refresh rate if the radio button is on the horizontal scan rate or pixel clock. Changing the refresh rate should not affect the totals. You should be able to type in 2720 and 1481 for the totals and 59.95 for the refresh rate and have the frequencies match perfectly on all monitors. The only problem is I don't know if the Dell will accept such a large blanking. The other option is to try setting the HP to 2720 and 1475 and the Dell to 2080 and 1225 to get exactly 60 Hz on all monitors, but there's no guarantee the video card will synchronize them.


Thanks for the reply Toasty. yes im using freesync, with it off it still happens.

I typed in 2720 and 1481 for the totals and 59.95 for the refresh rate and you were right the Dells threw a wobbler!

Also tried the HP 2720 and 1475 and the Dell to 2080 and 1225 the same capped 30fps.

Not sure where to go from here, my other card worked perfect with DVI, do you reckon it would work using 2 passive DP to DVI adaptors for the Dells?

I also tried HDMI on the HP with the same results and HDMI to 1 Dell with DVI adaptor.

Looking at the properties pic again why is the DELL 'V rate 50 - 61 Hz', I thought it should be 60Hz and the HP 'H rate is at 115 - 115 KHz'

https://i.postimg.cc/L6KWhGQN/omen-dell.jpg

Thanks for your time

Quick update...
Just to test I resized the eyefinity group to expand the HP to its native vertical 1440 (see pic below) and it works perfect! smooth as silk at 60fps vsync on (btw im using G-SYNC Pendulum Demo)
Does that give any more clues to the problem? that expanded eyefinity group is no use to me :-(

https://i.postimg.cc/6Q8xTsWj/expanded.jpg
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RE: Framerate locks to 30fps with vsync enabled in eyefinity - triplesync - 02-07-2019 08:33 PM

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