G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Talk about NVIDIA G-SYNC, a variable refresh rate (VRR) technology. G-SYNC eliminates stutters, tearing, and reduces input lag. List of G-SYNC Monitors.
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panicaz
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Joined: 27 Nov 2022, 17:10

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by panicaz » 30 Nov 2022, 09:40

imprecise wrote:
29 Nov 2022, 15:31
I have experienced this as well, but toggling G-Sync on and back off has fixed it for me.
This was the first obvious solution I tried.

Today I installed old Windows 10 1909 on a separate SSD and G-sync works totally fine. No VRR trigger in windowed mode if disabled in NVCP. So the problem is most likely in Windows 10 updates somwere between 1909 and 22H2 version.

Any thoughts about fixing it on modern version of Windows 10?
Dell S2716DG 144hz | R5 5800X3D | RTX 3070 | 16*2gb 3600mhz cl17

Kyouki
Posts: 190
Joined: 20 Jul 2022, 04:52

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by Kyouki » 30 Nov 2022, 10:00

Hmmm maybe full-screen optimizations stuff. Though I am not entirely sure how this works yet.

Just happen to know around those versions that got introduced.
CPU: AMD R7 5800x3D ~ PBO2Tuner -30 ~ no C states
RAM: Gskill Bdie 2x16gb TridentZ Neo ~ CL16-16-16-36 1T ~ fine tuned latency
GPU: ASUS TUF 3080 10G OC Edition(v1/non-LHR) ~ disabled Pstates ~ max oced
OS: Fine tuned Windows 10 Pro, manual tuned.
Monitor: Alienware AW2521H ~ mix of ULMB/Gsync @ 240hz/360hz
More specs: https://kit.co/Kyouki/the-pc-that-stomps-you

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jorimt
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Location: USA

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by jorimt » 30 Nov 2022, 10:14

panicaz wrote:
30 Nov 2022, 09:40
imprecise wrote:
29 Nov 2022, 15:31
I have experienced this as well, but toggling G-Sync on and back off has fixed it for me.
This was the first obvious solution I tried.

Today I installed old Windows 10 1909 on a separate SSD and G-sync works totally fine. No VRR trigger in windowed mode if disabled in NVCP. So the problem is most likely in Windows 10 updates somwere between 1909 and 22H2 version.

Any thoughts about fixing it on modern version of Windows 10?
May or may not be MPO-related (effectively makes some windowed apps act more like exclusive fullscreen when focused):
https://nvidia.custhelp.com/app/answers ... er-version

Nvidia offers a regedit to disable MPO:
https://nvidia.custhelp.com/app/answers ... /a_id/5157

You can attempt the regedit on your original drive (containing the newer version of Windows) to see whether that resolves your particular issue.
(jorimt: /jor-uhm-tee/)
Author: Blur Busters "G-SYNC 101" Series

Displays: ASUS PG27AQN, LG 48CX VR: Beyond, Quest 3, Reverb G2, Index OS: Windows 11 Pro Case: Fractal Design Torrent PSU: Seasonic PRIME TX-1000 MB: ASUS Z790 Hero CPU: Intel i9-13900k w/Noctua NH-U12A GPU: GIGABYTE RTX 4090 GAMING OC RAM: 32GB G.SKILL Trident Z5 DDR5 6400MHz CL32 SSDs: 2TB WD_BLACK SN850 (OS), 4TB WD_BLACK SN850X (Games) Keyboards: Wooting 60HE, Logitech G915 TKL Mice: Razer Viper Mini SE, Razer Viper 8kHz Sound: Creative Sound Blaster Katana V2 (speakers/amp/DAC), AFUL Performer 8 (IEMs)

Kyouki
Posts: 190
Joined: 20 Jul 2022, 04:52

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by Kyouki » 30 Nov 2022, 10:24

jorimt wrote:
30 Nov 2022, 10:14
panicaz wrote:
30 Nov 2022, 09:40
imprecise wrote:
29 Nov 2022, 15:31
I have experienced this as well, but toggling G-Sync on and back off has fixed it for me.
This was the first obvious solution I tried.

Today I installed old Windows 10 1909 on a separate SSD and G-sync works totally fine. No VRR trigger in windowed mode if disabled in NVCP. So the problem is most likely in Windows 10 updates somwere between 1909 and 22H2 version.

Any thoughts about fixing it on modern version of Windows 10?
May or may not be MPO-related (effectively makes some windowed apps act more like exclusive fullscreen when focused):
https://nvidia.custhelp.com/app/answers ... er-version

Nvidia offers a regedit to disable MPO:
https://nvidia.custhelp.com/app/answers ... /a_id/5157

You can attempt the regedit on your original drive (containing the newer version of Windows) to see whether that resolves your particular issue.
Read about this about a week ago, though didn't consider this one as a valid solution -- did this change per those versions? (if you know)
CPU: AMD R7 5800x3D ~ PBO2Tuner -30 ~ no C states
RAM: Gskill Bdie 2x16gb TridentZ Neo ~ CL16-16-16-36 1T ~ fine tuned latency
GPU: ASUS TUF 3080 10G OC Edition(v1/non-LHR) ~ disabled Pstates ~ max oced
OS: Fine tuned Windows 10 Pro, manual tuned.
Monitor: Alienware AW2521H ~ mix of ULMB/Gsync @ 240hz/360hz
More specs: https://kit.co/Kyouki/the-pc-that-stomps-you

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jorimt
Posts: 2481
Joined: 04 Nov 2016, 10:44
Location: USA

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by jorimt » 30 Nov 2022, 11:04

Kyouki wrote:
30 Nov 2022, 10:24
Read about this about a week ago, though didn't consider this one as a valid solution -- did this change per those versions? (if you know)
MPO support for Nvidia GPUs was introduced in driver version 461.09. I don't know what Windows 10 version introduced it at the OS-level off-the-top-of-my-head though.

Again, it may or may not be the culprit, but worth a shot.
(jorimt: /jor-uhm-tee/)
Author: Blur Busters "G-SYNC 101" Series

Displays: ASUS PG27AQN, LG 48CX VR: Beyond, Quest 3, Reverb G2, Index OS: Windows 11 Pro Case: Fractal Design Torrent PSU: Seasonic PRIME TX-1000 MB: ASUS Z790 Hero CPU: Intel i9-13900k w/Noctua NH-U12A GPU: GIGABYTE RTX 4090 GAMING OC RAM: 32GB G.SKILL Trident Z5 DDR5 6400MHz CL32 SSDs: 2TB WD_BLACK SN850 (OS), 4TB WD_BLACK SN850X (Games) Keyboards: Wooting 60HE, Logitech G915 TKL Mice: Razer Viper Mini SE, Razer Viper 8kHz Sound: Creative Sound Blaster Katana V2 (speakers/amp/DAC), AFUL Performer 8 (IEMs)

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panicaz
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Joined: 27 Nov 2022, 17:10

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by panicaz » 30 Nov 2022, 11:05

jorimt wrote:
30 Nov 2022, 10:14
May or may not be MPO-related (effectively makes some windowed apps act more like exclusive fullscreen when focused):
https://nvidia.custhelp.com/app/answers ... er-version

Nvidia offers a regedit to disable MPO:
https://nvidia.custhelp.com/app/answers ... /a_id/5157

You can attempt the regedit on your original drive (containing the newer version of Windows) to see whether that resolves your particular issue.
Yep! This works. Disabling MPO fixes stuttering and flickering with G-SYNC enabled.

Thanks you guys for help!
Dell S2716DG 144hz | R5 5800X3D | RTX 3070 | 16*2gb 3600mhz cl17

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jorimt
Posts: 2481
Joined: 04 Nov 2016, 10:44
Location: USA

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by jorimt » 30 Nov 2022, 11:42

panicaz wrote:
30 Nov 2022, 11:05
Yep! This works. Disabling MPO fixes stuttering and flickering with G-SYNC enabled.

Thanks you guys for help!
Nice.
(jorimt: /jor-uhm-tee/)
Author: Blur Busters "G-SYNC 101" Series

Displays: ASUS PG27AQN, LG 48CX VR: Beyond, Quest 3, Reverb G2, Index OS: Windows 11 Pro Case: Fractal Design Torrent PSU: Seasonic PRIME TX-1000 MB: ASUS Z790 Hero CPU: Intel i9-13900k w/Noctua NH-U12A GPU: GIGABYTE RTX 4090 GAMING OC RAM: 32GB G.SKILL Trident Z5 DDR5 6400MHz CL32 SSDs: 2TB WD_BLACK SN850 (OS), 4TB WD_BLACK SN850X (Games) Keyboards: Wooting 60HE, Logitech G915 TKL Mice: Razer Viper Mini SE, Razer Viper 8kHz Sound: Creative Sound Blaster Katana V2 (speakers/amp/DAC), AFUL Performer 8 (IEMs)

Kyouki
Posts: 190
Joined: 20 Jul 2022, 04:52

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by Kyouki » 30 Nov 2022, 17:27

jorimt wrote:
30 Nov 2022, 11:42
panicaz wrote:
30 Nov 2022, 11:05
Yep! This works. Disabling MPO fixes stuttering and flickering with G-SYNC enabled.

Thanks you guys for help!
Nice.
Cool, thanks.

Also cool it worked out. I'll remember that one for nexttime someone has the issue.
CPU: AMD R7 5800x3D ~ PBO2Tuner -30 ~ no C states
RAM: Gskill Bdie 2x16gb TridentZ Neo ~ CL16-16-16-36 1T ~ fine tuned latency
GPU: ASUS TUF 3080 10G OC Edition(v1/non-LHR) ~ disabled Pstates ~ max oced
OS: Fine tuned Windows 10 Pro, manual tuned.
Monitor: Alienware AW2521H ~ mix of ULMB/Gsync @ 240hz/360hz
More specs: https://kit.co/Kyouki/the-pc-that-stomps-you

progamingnoob
Posts: 10
Joined: 07 Jan 2019, 08:03

Re: G-SYNC works in windowed mode even disabled and causes stuttering/flickering

Post by progamingnoob » 02 Dec 2022, 03:47

panicaz wrote:
30 Nov 2022, 11:05
jorimt wrote:
30 Nov 2022, 10:14
May or may not be MPO-related (effectively makes some windowed apps act more like exclusive fullscreen when focused):
https://nvidia.custhelp.com/app/answers ... er-version

Nvidia offers a regedit to disable MPO:
https://nvidia.custhelp.com/app/answers ... /a_id/5157

You can attempt the regedit on your original drive (containing the newer version of Windows) to see whether that resolves your particular issue.
Yep! This works. Disabling MPO fixes stuttering and flickering with G-SYNC enabled.

Thanks you guys for help!
- same this regedit just fixed everything, my mw2 benchmark score didn't change, my 3080 is cranking out frames in mw2 again, almost consistantly 277 fps the whole time with no stutters or dips (im using 3x monitors btw idk if that matters)

- also just googling mpo it seems like the amd guys are using this tweak a lot

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