AW2725DF & DisplayPort Issue

[Woundman]

Hello,

I'm experiencing a strange bug on my PC. After rebooting, the first app I launch causes my mouse and keyboard to freeze briefly for about 1-2 seconds. This happens with specific programs like Discord, Battle.net, and Steam. Here’s what I’ve tried to resolve the issue:

• DDU & clean install of Nvidia drivers

• Fresh installation of Windows 11

• New DisplayPort cable

• Disabled HDR and G-Sync

• Forced performance mode & P-states

• Disabled HDCP

• Disabled game mode in Windows 11

• Disabled hardware-accelerated GPU scheduling

HDMI has the same issue, but the freeze is barely noticeable, maybe half a second or even faster. If I uninstall the Nvidia driver and run the Basic Microsoft Display driver, the freezing stops. Disabling "winmgmt" (Windows Management Instrumentation) on reboot also prevents the freeze.

I’ve also tried messing with CRU, thinking it was the EDID data causing the issue, but with no success. This issue isn't a big deal, but I’m curious about what could be causing it.

Computer Specs:

CPU: Ryzen 9 5900X
GPU: Nvidia RTX 3070
SSDs: Intel 905P & Samsung 970

Edit: The freeze only happens once after any of those programs are launched initially. It won't happen again until I reboot.

[daw1dek]

Same issue here, trying to find out what's causing it. Maybe nvidia drivers are bugged?
3060ti here and 5800X3D

[RealNC]

This is caused by Windows when the display and the GPU driver report too many display modes. When an application tries to enumerate every supported display mode, it will freeze the system until it completes. The more modes are supported, the longer the freeze. High refresh rate monitors suffer more from this because of the many refresh rate and resolution combinations, resulting in dozens of supported modes.

You can fix it by using ToastyX CRU to remove the "TV Resolutions" block, which are mostly useless on PC, and ToastyX SRE to delete the driver's scaled resolutions. You can also delete modes with refresh rates you don't actually use.

However, since it only happens once after startup, I don't think it's worth the hassle. It doesn't have any negative impact except for the first time the enumeration happens.

[MatrixQW]

RealNC, with my VG279QM (OSD overclock off) it used to change Hz to 144 sometimes with a reboot or when monitor came back from standby. I know this is something that happens on some monitors.
This was likely caused by Windows or monitor trying to read the EDID extension blocks in these situations and only having 144Hz maximum.
Also when entering desktop I could see a glitch like if it was applying a resolution on top of other resolution.

I enabled monitor's OSD 280Hz overclock, unchecked and removed all resolutions in CRU/SRE and just left 1920x1080p 240Hz in "Extension blocks" and it never happened again. So it's worth the hassle in these situations.
I have desktop at 240Hz (because at 280Hz GPU doesn't memory/clock down) and games at 280Hz.