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[GH-ISSUE #1949] G-sync cannot be triggered in full-screen mode #676

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opened 2026-02-27 21:07:33 +03:00 by kerem · 8 comments

kerem commented

2026-02-27 21:07:33 +03:00

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Originally created by @ycb678 on GitHub (Dec 28, 2024).
Original GitHub issue: https://github.com/shadps4-emu/shadPS4/issues/1949

Originally created by @ycb678 on GitHub (Dec 28, 2024). Original GitHub issue: https://github.com/shadps4-emu/shadPS4/issues/1949

kerem

2026-02-27 21:07:33 +03:00

closed this issue
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enhancement
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kerem commented

2026-02-27 21:07:34 +03:00

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@ycb678 commented on GitHub (Dec 28, 2024):

please include a true fullscreen mode instead of a borderless fullscreen

@ycb678 commented on GitHub (Dec 28, 2024): please include a true fullscreen mode instead of a borderless fullscreen

kerem commented

2026-02-27 21:07:34 +03:00

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@Hermiten commented on GitHub (Dec 29, 2024):

Can you please edit your first post to do a real issue and not only a question in the title ?
With more informations, like what happens with the full screen, you can aloso send a screen, etc...

Thanks you

@Hermiten commented on GitHub (Dec 29, 2024): Can you please edit your first post to do a real issue and not only a question in the title ? With more informations, like what happens with the full screen, you can aloso send a screen, etc... Thanks you

kerem commented

2026-02-27 21:07:34 +03:00

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@ycb678 commented on GitHub (Dec 29, 2024):

Under normal circumstances, the variable refresh rate can be triggered, but not in shadps4, and the system may think that this window is a program and not a game

@ycb678 commented on GitHub (Dec 29, 2024): Under normal circumstances, the variable refresh rate can be triggered, but not in shadps4, and the system may think that this window is a program and not a game

kerem commented

2026-02-27 21:07:34 +03:00

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@ycb678 commented on GitHub (Dec 29, 2024):

https://github.com/user-attachments/assets/b11eac29-7a04-439f-9540-bc2b512e644e

@ycb678 commented on GitHub (Dec 29, 2024): https://github.com/user-attachments/assets/b11eac29-7a04-439f-9540-bc2b512e644e

kerem commented

2026-02-27 21:07:34 +03:00

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@ycb678 commented on GitHub (Dec 29, 2024):

https://github.com/user-attachments/assets/d857a5da-40ed-4eae-9210-dbf6c4b53017

@ycb678 commented on GitHub (Dec 29, 2024): https://github.com/user-attachments/assets/d857a5da-40ed-4eae-9210-dbf6c4b53017

kerem commented

2026-02-27 21:07:34 +03:00

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@ycb678 commented on GitHub (Dec 29, 2024):

The upper right corner shows the refresh rate change that comes with the monitor

@ycb678 commented on GitHub (Dec 29, 2024): The upper right corner shows the refresh rate change that comes with the monitor

kerem commented

2026-02-27 21:07:34 +03:00

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@nr1971 commented on GitHub (Dec 30, 2024):

VRR seems to be working fine here on the linux-qt build from 12/29. My monitors OSD is accurately matching the ingame fps

@nr1971 commented on GitHub (Dec 30, 2024): VRR seems to be working fine here on the linux-qt build from 12/29. My monitors OSD is accurately matching the ingame fps

kerem commented

2026-02-27 21:07:34 +03:00

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@2mg commented on GitHub (Aug 23, 2025):

VRR seems to be working fine here on the linux-qt build from 12/29. My monitors OSD is accurately matching the ingame fps

This is different for Windows (W10 here) as ShadPS4 is just a pure window, even when F11 is used it's only maximized to fill the screen (sounds like Fullscreen Borderless but it's not).

~~You can force DXGI via NVCP for example and then G-Sync works, but that isn't recommended by devs, as it cuts the FPS in half.~~
This is semi-false, you need to disable Low Latency Mode from Ultra to something less, and it doesn't cut FPS with DXGI.

Also forcing G-Sync to work on windowed applications is hack-y, and sometimes it just won't work.

Lossless Scaling without any scaling can be used to enable G-Sync support, and I believe that SpecialK could be used too, but these are external tools.

@2mg commented on GitHub (Aug 23, 2025): > VRR seems to be working fine here on the linux-qt build from 12/29. My monitors OSD is accurately matching the ingame fps This is different for Windows (W10 here) as ShadPS4 is just a pure window, even when F11 is used it's only maximized to fill the screen (sounds like Fullscreen Borderless but it's not). ~~You can force DXGI via NVCP for example and then G-Sync works, but that isn't recommended by devs, as it cuts the FPS in half.~~ This is semi-false, you need to disable Low Latency Mode from Ultra to something less, and it doesn't cut FPS with DXGI. Also forcing G-Sync to work on windowed applications is hack-y, and sometimes it just won't work. Lossless Scaling without any scaling can be used to enable G-Sync support, and I believe that SpecialK could be used too, but these are external tools.