From my experience Micron kinda shit for cryptonight, my hynix at  1150/2100 can do 1050hs but i got 1 micron at 1150/2200 com PB timmings and doing around 940h/s. and sometimes  it starts at 1020h/s but go down to 940h/s, its a shame atleast at heavy the values are not stable.
No 1 wanna share some good timmings for Micron for cryptonight? PBE timmings not giving good values