I just added an MSI RTX 3070 to my worker (Lolminer with Hive OS), and it seems has a major problem with a high invalid share rate. All of my other graphics cards are working well. I tried to install the older version of the Hive system as well as the older version of the Nvidia driver, but non of them helped me solve this issue.
A suggestion, not saying it will work, but try to wait by applying overclock to the DAG generation has finished. A delay of 40 secs or so should be good.
Do you experience this if you do not overclock at all?