It is normal... it nearly takes 5-6 minutes to complete get full Mhs in the 3060... Just wait a little bit. You can also put your OC to see the results...
I'm getting more than 37Mhs without an aggresive OC
You missunderstand me.
24mhash is not a good sign. After upgrade to 460 - works fine.
It runs at 37,6Mhash.