Before you do any of the other crap listed, turn off the following in game 1 at a time until you find the one doing it.
And the one for Ambient Occlusion - Can't remember the name since the servers down. Some of the lighting effects in game are a little buggy. And it looks just like your card is about to crap out.
What cpu are u running with that hight of a VCore?
Also, with the driver force settings, it's always best to either use the game setting unless it's unavailable or enhance the game setting. Forcing usually reduces performance. Now i'm not sure if ATI will let you enhance because my last run with ATI (4890) lasted 3 days before I sent the card back and bought another nvidia. Aside from the crap drivers, the fan made me want to break something. I either had to set it to 60 to make sure it stayed cool or put up with 0,51,0,51,0,51 every 3 seconds. Very annoying.
Toubleshooting and overclocking don't really work well together. And seriously, back that core off some. Once you get your card working right try getting those voltages down some. I know that cpu takes a bit more juice than some of the newer ones.
Best to run your memory at stock speed and voltage. Depending on your motherboard you might be able to unlink the fsb. Start you vcore out low and work your way up. Ignore the auto values if you ever use them, some board like to run high cores.
Heres what mine looks like.
q9550 (E0) 1333fsb @ 2.83
ocz ddr2 1066
1600fsb @ 3.4 - vcore 1.275
ddr 800 (Better timing, low voltage and more stable divider) Linked/Sync
I wouldn't bother with the e8400. I ran a 8500 for a while and wasn't impressed.
Turned off every overclocking option I'd tweaked. Reset the entire BIOS back to defaults. Everything now running at stock. Ran STO again, reset all graphics options to default. Still artifacting from the instant I load into the game. I reduced the graphics quality to minimum on the slider. Pretty much every graphical option is off or as low as it will go. Still artifacting all over the place.
Don't really know what else I can try.
Do you think I might have yet another faulty ATI card?