Sets IoPriorityBoostEnable = 1 under Session Manager\Executive. When a thread blocks waiting for disk or network I/O, the kernel can give it a temporary priority boost the moment the I/O completes — the thread runs sooner and finishes its work before sliding back to its baseline priority. This is on by default, but driver- or registry-level disabling silently kills it on some OEM images. Re-enabling explicitly guarantees the boost is in effect. Safe.
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://learn.microsoft.com/en-us/windows-hardware/drivers/kernel/priority-boosts