Post [Q] Need Some Help

Hye ! Im new here ...

I have Droid Razr Xt912 Verizon having Android 4.1.2 Stock Rom The problem is that it takes Loto of Ram space And my Ram is Almost 110 to 70 mb free
I have Installed 4.4 on other Slot But I dont like It also .... please Recommend me a Rom above/Or 4.0.4 With Less Bugs And with more free Ram space