last night I was getting a ton in the logs about could not figure out how to move 1 yd.
(no way to get there)
I stopped HB and restarted. The logs quit filling up but then I was seeing the same thing as you.
He was pausing like a mad man.
The only way to fix it was to reboot the machine. I don't know what problem they are having but after running for about 3 hrs my machine was running like mud.
The only way I can find to fix this is to reboot the machine over and over.