i have 6 1080ti mining rig , and --oc1 only seems to work on one card. using hiveos
anyone know why? GPU1 in image

Hi AZaman,
it should work on all cards, however we see your point.
After some time, do the values for GPU0 and GPU1 converge to a higher value?
We notice that they are a bit warmer than the rest of your GPUs, might affect the performance even though it not a great difference.
Let us know if after a few hours the difference is maintained. Also, do you have any display hardware attached?
Additonally, could you paste the log here? The information in the begining should be enough (the GPUs info is the most important).
Thanks.
Cheers