2. I tried all the cores of the miner, the core does not automatically set correctly in Hive OS (1.42 core 1, 1.43 core 3). You must manually set the sign from 6 to 8 if you use 1.42 and 12-15 if use 1.43 20xx 30xx series of cards.
The program will autotune to find the best Kernel. In 1.44 kernel 1 or 12 seems to be best on rtx 3xxx cards.