Thank you! I worked my way through the guide with a fresh windows 10 install. That soft power play reg edit is awesome. My 56/64's are running much cooler now. All went to plan except that when I try to disable/enable the Vega FE in the device manager my system crashes:

I am able to disable the FE card in device manager, but when I go to reenable I get error code 43 and Windows disables the card. I tried a few times--sometimes the card disables due to error, and sometimes I get a system crash.

I also tried to toggle HBM Mem on/off using the AMD software, but I get a system crash. The crash consists of the screen fragmenting, then restarting.

Any thoughts as to why? I am planning to add a little more physical memory. I only have 4 gigs. (virtual memory is 60+gig).