did you lock your memory to mine kaspa?
also, you updated your driver to the one that enables lhr again. use nvidia-driver-update -s in the future.
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hint, hint. What about controlling the 810 memory lock through the hive interface?
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his don’t lock memory
go back to one of the older drivers and you should be good
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lower the memory clock until its stable
you have a hynix card 
Start around 500-900 and work it up from there. I have a card that couldn’t do more than 1400, but another would crash at 900