Latest Windows 11 24/H2 Release and Graphics Issues

Agree. . .

Windows should allow a roll back to 23H2 for those having problems. But they locked us out after upgrade to 24H2.

Looks like Windows 11 24H2 has really messed up iGPU Quick Sync. Adobe still 'Investigating' with Intel on this issue - but I think there are two issues at play for Adobe customers (can't say for Resolve editors.

I have stuck with Win 11 23H2 and as mentioned above iGPU still OK for H265 but NOT H264. This is on Premiere Pro 25.1.

Version 25.0 is OK

Members of Adobe community reprt similar issues to your yourself that Win 11 24H2 adds another dimension to the mess - H265 not working either on Quick Sync

As you correctly report - we have total silence from Microsoft on this.

Intel appear to be a little bit more proactive but have not nailed any apparent issues on their drivers - so assume Intel are clean on this one.

I'm using xxx .6449 driver on my iGPU with Win 11 23H2 and it is OK for H265 and H264 on Premiere Pro 25.0

25.1 messes up H264.

I've raised a request on Microsoft (via their Feedback mechanism ) that when they introduce a new major release like Win 11 24H2 that they DO NOT remove the ability for a user to download thye previous version eg Win 11 23H2 from their website (Media Creator)

They remove it straight away which is a ridiculous thing to do until the new version is proved to be stable in the field for at least 6 months.

Useful info about Win 11 24H2 quirks

I am sticking with Win 11 23H2 for now whilst I sort out some other anomalies I have using Adobe Premiere Video editing application.

The latest version (25.1) has caused a change of behaviour in how iGPU is selected for H264 decoding and NVidia discrete GPU (4080 Super) ius used for some reason.

I don't want to mix the two yet with Win 11 24H2 until I have one problem solved :-)

Ok, here is my experience. I installed 24H2, rebooted, then let Windows Update discover and install a bunch of driver updates including an Nvidia driver update for my RTX 4050 GPU.

After the update I am seeing intermittent performance problem when playing games and tracked it down to this one key difference in settings in 24H2:

Prior to 24H2 in the Windows Graphics settings there was a selection for "Desktop Applications" for you to force all desktop applications, by default, to use the iGPU

After 24H2, the default desktop application settings has been removed which means now that Windows will occasionally take over the Nvidia GPU for something even when I am in a full screen game for which I have configured it to use the Nvidia GPU only. This causes the game to suddenly and randomly switch rendering from the Nvidia GPU to the iGPU and my fps drops from 60+ to 5 or 6 fps. To fix it I have to exit and relaunch the game. Not a good experience.

Same issues. In my case, it's clearly a graphics driver issue. on Dell G16, RTX 4070 Notebook.

After 24H2 install, complete trainwreck with Intel firmware and graphics. After installing those, external 32 inch 4k external via USBC/Display Port starts blinking black and then back on every 10 seconds or so.

Rolled back Nvidia driver several versions to Dell compatible version. Seem to fix the problem for the rest of the session.

Logged out and back in and problem reappeared. Machine hang after both screens went dark trying to install Nvidia driver update. Had to hard reboot.

Disconnected external monitor and rebooted.

Ran Nvidia update to latest driver and plugged external back in. Seems to be working.

For now.

**UPDATE** Problem reappeared after reboot. After troubleshooting this for four hours, in my case, it is 100% from Nvidia drivers. Uninstalled with DDU and laptop screen worked fine, everything good, no external monitor connected. Since Windows auto installs the driver for Nvidia since the graphics card is present, everything goes off the rails after that. Black laptop screen. External monitor works but at Intel UHD resolution (not 4k). Blinks black on an off randomly. Updating to latest Nvidia drivers don't help. What a total trainwreck. Cannot believe this is a problem with two huge companies in 2025.

**UPDATE 2** Narrowed this down even further to the connection of an external monitor using Display Port to USBC cable. Uninstalled Nvidia driver with DDU again and rebooted. Everything works as expected until I add external monitor. I can add the external monitor via HDMI. Unfortunately, on my laptop, the Nvidia graphics only run through USBC port so the 4k resolution is not supported. Also, you cannot expand desktop to both monitors, only duplicate. If I add the monitor through the USCB on my laptop, the laptop screen goes black and is unusable, the external monitor displays the desktop at 4k but is twitchy and blinks on and off randomly every 15-20 seconds.

**FINAL UPDATE** In my case (Nvidia RTX Laptop with external 4k HDR monitor), the issue is with Display Settings > Extend these displays. It doesn't work. The fix (in my case), select external 4k monitor (#2, main monitor) and select Show only on 2.

You won't be able to use the laptop screen as a second monitor because it goes dark but all of the black blinking issues and stuttering disappear, even when using latest Nvidia drivers and Display Port to USBC cable.