Hi!
I’m having the same problem as you with my 3070 Ti… it starts mining at 40MH/s on RVN, and a couple of minutes later it drops to 35MH/s…
I’ve tried different OC configs, miners and updated the driver version, but nothing works…
I’ve noticed that the Core Clock goes all the way down to 1110Mhz, and the power usage to 230W, even using absolute core clock and no power limits.
Did you find out anything about that problem?