Checking the Windows 10 "Display Sync Setting".

Windows 10 has a secret hidden setting for displays connected to the graphics cards which seems to set the displays "Sync Frequency" at which the display will operate.

Most displays are set to 30hz or 60hz (most common) or if you have a high end display or multi-frequency display, it may go as high as 144hz.

In any event, I have been trying a few displays I have available and when I looked at the display frequency in AMD's radeon software under "display spec's", this will show the current display sync frequency. On all the displays, this seem to be set at 30hz or 60hz, even though I had 60hz and 144hz capable displays attached.

It seems Windows 10 has a secret setting to "change your displays sync frequency" from a low setting to it's maximum. I doubt many of you know or have seen it, but you can force your display to use it's maximum sync frequency by adjusting this setting.

Advanced Display Settings.jpg


I was able to force my displays to use their maximum sync settings which was then reflected in AMD's Radeon's "Display Specs" as the current sync setting for the display. Before I started, most of my displays were set to their lowest setting offered.

The other stupid thing Windows 10 does is turn "Game Mode" on by default.

Microsoft (XBox Gaming) is vague on exactly what this does, but the one thing they state is that it "Helps achieve a more stable frame rate depending on the specific game and system". This may be responsible for the refresh rate displayed in "Advanced Display Settings" to be set at the displays lowest refresh rate. As well, given the statement, it may interfere with the frame rate delivered by your graphics card.

So, I cannot claim this will give your rig an FPS boost, but it did for me.

Be well.
 
Last edited:
Windows 10 has a secret setting for displays connected to the graphics cards which seems to set the displays "Sync Frequency" at which the display will operate.

Most displays are set to 30hz or 60hz (most common) or if you have a high end display or multi-frequency display, it may go as high as 144hz.

In any event, I have been trying a few displays I have available and when I looked at the display frequency in AMD's radeon software under "display spec's", this will show the current display sync frequency. On all the displays, this seem to be set at 30hz or 60hz, even though I had 60hz and 144hz capable displays attached.

It seems Windows 10 has a secret setting to "change your displays sync frequency" from a low setting to it's maximum. I doubt many of you know or have seen it, but you can force your display to use it's maximum sync frequency by adjusting this setting.

View attachment 249399

I was able to force my displays to use their maximum sync settings which was then reflected in AMD's Radeon's "Display Specs" as the current sync setting for the display. Before I started, most of my displays were set to their lowest setting offered.

So, I cannot claim this will give your rig an FPS boost, but it did for me.

Be well.
I think game settings override those of Windows if you run it in fullscreen mode?
 
I think game settings override those of Windows if you run it in fullscreen mode?
It doesn't. I tried FullScreen, Windowed and Borderless. It did not change the "display's sync frequency" from 30hz to 60hz. Apparently, neither did the graphic's card, regardless of sync setting there. One display I had used for years on Elite, regardless of the sync frequency I set in Elite or on the graphics card, the display ran at 30hz. Only when I changed the sync frequency in Windows 10 "Advanced Display Settings", did the display finally change the frequency. As well, it also allowed the "Pixel Format" to be recognised by the display, set in the graphics card. In effect, I was able to use a different color space or color palet than was originally offered by the display.

The information offered in Windows 10 "Advanced Display Settings" will change depending on the display sync frequency set.

Elite Odyssey.jpg


Be well.
 
Last edited:
This must be AMD related only as never had this issue setting monitor frequencies through NVCP and/or them being overridden by Win10.

That Advanced option has been present since build 2004 (Win10)
It was in Windows 7 too, just in a different menu. In fact, I'd be bold enough to say I reckon it's probably been in every version of Windows since NT.
 
Barely remember Win 7 ;)
But it's never been present on that particular screen that OP posted in Windows 10 (until 2004)

I used to fiddle with refresh rates constantly to get my stream sync working, due to different refresh monitors etc.
Wasn't until MS fixed WDM in 2004 and the drop down appeared during that update too.
 
It was in Windows 7 too, just in a different menu. In fact, I'd be bold enough to say I reckon it's probably been in every version of Windows since NT.
Maybe not back that far.

Microsoft's latest preview of Windows 10 includes a new and easier way to set a display's refresh rate beyond the standard 60 hertz.


Be well.
 
Maybe not back that far.

Microsoft's latest preview of Windows 10 includes a new and easier way to set a display's refresh rate beyond the standard 60 hertz.


Be well.
Ok, I might have gone a bit too far back with NT. It was definitely in XP though:

 
I unplugged my the HDMI connection to my HDMI TV (55" Samsung) Monitor and plugged it back in. Windows 10 reset the refresh rate to 30hz.

Seems to be a default when a new display is detected. For @GJ51
 
Last edited:
I unplugged my the HDMI connection to my HDMI TV (55" Samsung) Monitor and plugged it back in. Windows 10 reset the refresh rate to 30hz.

Seems to be a default when a new display is detected. For @GJ51
Well, according to https://en.wikipedia.org/wiki/Refresh_rate Windows NT based systems (ie. Win10) set the default refresh rate to a conservative rate. Whereas old OS' (Win95 and Win98) set it to the highest rate possible.
 
In any event, I would have expected the video card driver and software to have the "final word" in setting the sync frequency for a display, but apparently, this is driven and overridden by Windows 10's advanced display setting. It also seems to have a lower default setting if the display is redetected or set lower for any new display.

I found no way to use AMD's Radeon software to force a sync frequency change upon the display itself.

Maybe Nvidia has this setting exposed or available, or if setting it on an Nvidia card would actually change it in Windows 10 Advanced Display settings or on the display itself.
 
Windows 10 has a secret hidden setting for displays connected to the graphics cards which seems to set the displays "Sync Frequency" at which the display will operate.

Most displays are set to 30hz or 60hz (most common) or if you have a high end display or multi-frequency display, it may go as high as 144hz.

In any event, I have been trying a few displays I have available and when I looked at the display frequency in AMD's radeon software under "display spec's", this will show the current display sync frequency. On all the displays, this seem to be set at 30hz or 60hz, even though I had 60hz and 144hz capable displays attached.

It seems Windows 10 has a secret setting to "change your displays sync frequency" from a low setting to it's maximum. I doubt many of you know or have seen it, but you can force your display to use it's maximum sync frequency by adjusting this setting.

View attachment 249406

I was able to force my displays to use their maximum sync settings which was then reflected in AMD's Radeon's "Display Specs" as the current sync setting for the display. Before I started, most of my displays were set to their lowest setting offered.

The other stupid thing Windows 10 does is turn "Game Mode" on by default.

Microsoft (XBox Gaming) is vague on exactly what this does, but the one thing they state is that it "Helps achieve a more stable frame rate depending on the specific game and system". This may be responsible for the refresh rate displayed in "Advanced Display Settings" to be set at the displays lowest refresh rate. As well, given the statement, it may interfere with the frame rate delivered by your graphics card.

So, I cannot claim this will give your rig an FPS boost, but it did for me.

Be well.
Didn't you claim the other day that you were getting >120Hz in conflict zones on your machine?
 
Back
Top Bottom