Desktop Windows Manager (DWM) memory leakage in Windows 10 (Version 2004).

Strangely, I dont have this option..

Like I said, the option is just there if the driver supports WDDM 2.4. So if you dont have a newer or latest Intel driver with device which supports it, the option is not there.

Still to memory leak anymore for me! The leak is totally gone since I deactivated Hardware-accelerated GPU scheduling.

You can also disable it via regedit:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers

dword32 "HwSchMode"

1 = disabled

2 = enabled

Option wont be there, again, if you dont use a WDDM 2.4 driver and at least 20H1.

Download latest from https://downloadcenter.intel.com/download/30266/Intel-Graphics-Windows-10-DCH-Drivers and then see if the option is there, and toggle it on and OFF again reboot.

Bad news sadly: My laptop was leaking memory again of dwm.exe process while I just had  2 video streams open and the memory was leaking around 2mb/s linear growing. I had woke up the laptop from hibernate that day, which is the first time I had used hibernate since the change of the gpu schedule option. So the issue sadly is not connected with the gpu schedule option it seems, but rather using hibernatemaybe. I had a auto hibernate timer of around 10h set, so when I would wake up the laptop quicker, it wouldn't trigger hibernate. Someone maybe can confirm, who had the issue also used hibernate in between? Thats also maybe the reason why Intel couldn't reproduce it, because they never thought of using hibernate for the testing.

also if you are using "fast startup" that basically means it will use a "mini hibernate" (mini hibernate of kernel + drivers + system related stuff) each restart of windows, so if hibernate is indeed a root cause of this issue, it might trigger it too with "fast startup" activated.

you can deactivate hibernate, which then automatically turns off "fast startup" by opening a cmd.exe as administrator and type in: powercfg -h off

DWM.exe runs high (150MB) then start to jump up when I open Firefox browser and this only happen when I start up my PC from shutting it down then it run fine when I restart my PC like it's run at 15-30MB....I had version 27.20.100.9127 of the Intel UHD Graphics 630

After several days of just using hibernation at the end of day, dwm.exe is suddenly at 3.6GB of private data :D  Restarting now.. 

Intel is saying that they are aware of this issue and are tracking it internally. They are asking for memory dumps of dwm.exe to help them with debugging. So if you want to help, see this message for details:

https://community.intel.com/t5/Graphics/BUG-dwm-exe-uses-memory-leakage-with-Intel-HD-Graphics-630/m-p/1272388#M96122