Here are 3 possible fixes for the ntoskrnl.exe memory leak on Windows 10.

1. Update your Network Drivers.
2. Go into your registry via regedit and navigate to “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Ndu” and edit DWORD “Start” and change the value from 2 to 4.
3. Disable “Show me tips about Windows” under Settings > System > Notifications & actions.

Any of these changes will require a system restart afterwards to come into effect.

Hopefully you see the problem has been fixed or a drop in its memory usage.