But since you haven't touched your voltage than it can't be the issue.
Now i will run your settings.
Anyway, did you check the temperature of the VRAM?
I keep forgetting to bring up temp ; its under 70c at all time with fan at 50-60%. Running borderlands 2 maxed net me 41c and a solid 60 fps with minimal gpu usage. No tearing. These looks pristine to me. I dont think the temp sensor is busted because it behave normally when i lower fan. The temp then sky rocket and i crash there and then.
I can re-say that volt is locked, thats what it says on the bios info, it use a different setting control. To unlock it, i'd need to install Stilt's bios but i get BSOD after i flash it and i havent gotten any reply to my post since yesterday. To compare, i can change volt just fine on my 2 other cards. It bothers me because i would like to undervolt to see if it solve my stabilities issues.
Vector is odd because i clearly get +60 mhs and +300 Initial WU and big boost for 10 minutes consistently everytime ( and i tried at least a dozen time) vs vector 1 or not vector set. My pool confirm that by paying me 200 extra mh for that 10min period. Regardless.
Then i guess setting 512 actually made me set it up from 128 to 256.
So anyways, i put your settings, effectively changed -w to 256(512), removed vector.
Two things happened:
-No artifacts from this OC/UC
-Crashed after 2 minutes, i will run it again after i check something
Khash was at upper 700s so fairly low. I'm getting a bit worried that the chain crash episode of this morning caused perm damage. I never, never crashed so fast so i will rerun it a few times.
I hope we find a fix or something change because i can't RMA it for 3 weeks and i fiddled with BIOSes so i dont know if they can access a log to see that i attempted to update the vBIOS.