3060 problem

Where is the problem

With Nvidia RTX 3060 which is LHR you can reach 26 Mh with T-rex in mining ETH.
With Nvidia RTX 3060 which is no LHR you can reach same result.
I personaly tried with 3060 no LHR to make 50 Mh throught fan trick with mining Erg on Nbminer but when I go back on T-rex and ETH, every few
minutes miner has reseted. In other case miner can’t start because I get error mesage :“TREX: Can’t find nonce with device [ID=1, GPU #1],
cuda exception: CUDA_ERROR_LAUNCH_FAILED, try to reduce overclock to stabilize GPU state”

The question is : Where is the problem, why rtx 3060 can’t reach 50 Mh? In drivers of GPU, algos or something third?

the RXT 3060, the old one that doesnt have LHR limitations wants to be in PCI-e direct slot and not with riser and to be connected to a monitor or HDMI dummy. Not sure if and how it can be fooled in miners.