RVN miners: did your overclocked hash rate drop recently?

I'm using T-Rex 0.20.4, and a 3070 EVGA XC3 Ultra, and up til 2-3 weeks ago I was getting a SOLID 30 MHs, but now using the same overclock settings (+1250 VRAM, 60 PWR), I can't get above 28 MHs. Anyone else?