Sorry for let you waitting, I have been sicked for few days and couldn't reply you.

Perfect !! , you already did the hard part, now for the task scheduler can you follow this also ? and let me know the result too

Open Task Scheduler > click Create Task.

Name it something like Set DWM Low Priority and tick “Run with highest privileges.”

Go to the Triggers tab > click New > choose “At log on” > hit OK.

Go to the Actions tab > click New > choose “Start a program.”

Program/script:

cmd

Add arguments:

/c timeout /t 10 && wmic process where name="dwm.exe" CALL setpriority 64

=> The timeout waits 10 seconds so DWM is ready.

Save everything > right-click your new task > choose Run to test.

If Task Manager shows DWM as Low, you’re done and dusted