Do you mine on the pool closest to you? High ping (50+) can result in faulty shares
Do you have a wired and stable internet connection? Same as above, if you have a bad connection then try to get a better provider.
If the two above is yes, then:
Use lolminer 1.34 or NBminer 39.6
For LHR 3060’s, test your core clock between the 1400-1500 range and Samsung memory clocks between 2200 and 2700.
I have three 3060 rigs, one v1 LHR and two v2 LHR and I tried to go for stability so i’m using 1450 core 2200 memory and 103 PL on all of the cards and i manage to get 39 MH on the v1 cards, 34 MH on the v2 cards with an overall efficiency of 98.81% with lolminer 1.34
BTW! I saw that you are CPU mining Monero while doing GPU mining, your LA is not too high because of that? It might cause share drops If you overload the CPU.