Sample Decoder for screen capture using HW is slow on Windows10 Enterprise

Hi,

I am running sample_decode application (from Intel Media Samples 6.0.0.49) for screen capturing on a Windows10 enterprise machine (laptop) using HW decoding option. My screen resolution is 1366x768, graphics card is Intel HD Graphics 4000 and driver is updated with latest version as per my understanding. But I am getting a slow capture speed (15~18 fps only) on this machine. I also see "WARNING: partial acceleration" message on command prompt when running this sample decoder app.

I am attaching the system analyzer log of this laptop for your reference. Can you please analyse it and let me know the reason of slow capture speed on this laptop?

Thanks,