well this bis what i got without soft shadows otherwise the same settings as you have.
all i do is disable my NIC no internet
off with FW antivirus
and then i get up the taskmanager and start shutting down processes to get it to as low as possible.
then i benchmark games 3DMark aquamark and so on
here is a honest 96.98 bench
i´ll do one with say 92.91´s
i have AA AF in CP set to application controlled
otherwise everything is set to max quality in CP
in game settings are
4xFSAA 4x AF
otherwisse maxed out that is 1280x1024 computer maximum
not too bad ?