I have tried on Nbminer 39.7 for my cards
I have 3080ti Evga XC3 Ultra (Flash Bios using Precision x1) & 3080ti Palit Gaming Pro.
Both hitting only approximately 78mh after all sort of settings.
Both didn’t change thermal pad and just got out of a box recently.
After updating i can get 79mh for both but still cant go above that.
But the first time it hash it goes to 82 for both and then drop and never come up.
also i’m not sure how to use t-rex miner and where to add (how to add) in the command to make sure it triggers lhr mode?
If i didn’t put any command my 3080ti only hash 20-30+ mh
You don’t have to specify any config for lhr on the newer versions of nbminer or trex unless you’re having trouble then you can specify the lhr unlock percentage in either. Check the readme for each and miner config info bubble for the correct syntax in hive.