Ran Resource Monitor in background while playing AHIII Pre-Release 3 on my box (in sig below).
CPU Monitor showed Core 0 running at around 70%-80%, Core 9 running around 30%-35%, Core 10 running around 22%-27%.
Core 2 running 0%, Core 4 running around 1%-4%, Core 6 running around 10%-12%. Total CPU avg usage showing 17%-22%.
Core 1 parked, Core 3 parked, Core 5 parked, Cores 7 and 8 parked, Core 11 parked (so it appears that no Hyper-threading is occurring during AHIII as all logical cores are "parked"). CPU is set to OC to 4.0GHz boost in Gigabyte F22 UEFI.
I do have several resources running in the background while playing AHIII:
SB X7 Control Panel, CH CMCC, Kapersky AVG, MSI Afterburner, Bigfoot Killer Networks Manager, CorsairLink 4, Gigabyte App Center, Logitech Mouse and Keyboard, Samsung Magician (ones that are set up to show in Notifications Bar....have about 6 more running in background that I know of as well). Have used BlackViper's Services list and have edited services on my box also. Still have a fair amount of processes running on my box (75 processes as shown in Task Manager).
Tried to take a snippet of all 12 cores but couldn't get it done in time so I typed the core usage % as recorded.
Game runs fine around 79-80 FPS everywhere except on the ground where it runs around 64-71 FPS but all gameplay is smooth (use AMD FRTC in addition to AMD FreeSynch).
This is what I've seen occurring on my box.