Placing NUC in "Low Power Mode" results in network "pauses"

I have a DC3217IYE NUC kit. I have been using it very successfully as an HTPC running Windows 8 for a few weeks.

I moved the motherboard to a fanless case and it worked well but the temperatures were running higher than I liked.

So I went into the BIOS and put the NUC into "Low Power Mode" (It was in "High Performance" mode.)

The temperatures are much lower now, and I am still happy with its level of performance.

But I am having one problem. The wired NIC seems to pause about every ten minutes. It will stream perfectly and then it will just stop for about 30 seconds and then resume. Is there a setting in the Windows network drivers that needs to be adjusted now that the BIOS has been placed into "Low Power Mode"?

Thanks,

Steve