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LHR.md

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+# LHR guide
+
+T-Rex has partial LHR unlock functionality for 30xx GPUs mining `ethash` (~70% of full hashrate).</br>
+
+* In order to enable LHR mode, you need to explicitly tell the miner which GPUs are LHR and which are not.
+This is done by specifying `--lhr-tune` parameter which takes values from 0 to 8:</br>
+`0` - disabled (use for non-LHR cards)</br>
+`1` - lowest hashrate, low chance of LHR lock</br>
+`4` - recommended starting value for most LHR cards</br>
+`8` - highest hashrate, high chance of LHR lock</br>
+It can also be set for each GPU separately, e.g. `--lhr-tune 0,0,4,0` - this will tell the miner that the third GPU
+is LHR and that it needs to start with the tuning value of `4`, while the rest of the cards are non-LHR.</br>
+HiveOS equivalent would be `"lhr-tune": "0,0,4,0"`
+
+* It's important **not** to set intensity values manually as that may interfere with the unlocking algorithm.
+
+* The miner will try to achieve reasonable hashrate levels using the provided settings, and if that's not possible, 
+will start aiming lower. During this process the reported hashrate will fluctuate and mostly stay on the lower side
+because every LHR lock will cause the miner to pause for 20 seconds to unlock the GPU, so you may need to wait till
+it finds stable settings.
+
+* Don't change your overclock settings too much while the miner is running, particularly be careful with the changes
+that may result in a rapid hashrate drop, like reducing memory overclock or decreasing power limit significantly
+(all during mining) - this can trick the miner into thinking the LHR has kicked in.
+
+* 3060 rev.1 cards are not given any special treatment, and you're better off running them with 470.05 driver as before.