Wrightclick: #10 I started killing processes one by one and discovered the process 'speech runtime executable' to be the culprit. When I killed it, CPU usage for 'system and compressed memory' went to zero.
However, after killing the 'speech runtime executable' I could no longer talk to Cortana (Hey Cortana). Oh well. At least I got my system back.
All I have to do is click the 'O' in Quick Launch on the Task Bar and then type or just click the Mic in the bottom right corner to talk to Cortana. Works fine. But after you talk to her that 'speech runtime executable' process shows up again and the 'system and compressed memory' process is pegged back at 19% CPU again.
Once you kill the 'speech runtime executable' process, the CPU usage for the 'system and compressed memory' process goes back to zero.