I think the program is problematic on windows is the desktop window manager. This program can be found in c:\windows\system32\dwm.exe. This program takes the allocation of more performance to be run properly.
- Open your Nvidia Control Panel
- Go to Manage 3D Settings. You will see 2 tabs,
Global Settings and Program Settings.
- In Program Settings, add dwm.exe (Desktop Windows Manager) from
C:\Windows\System32
directory and set Power Management Mode becomes
Prefer maximum performance for this
program.
And yes, your video card is now idling at 65 C. Provide better cooler for your notebook or PC.