iloveamd , the general rule when loosening or tightening the ram timings work as
2,3,3,6
2.5,3,3,6
2.5,4,3,6
2.5,4,4,8
3,4,4,8
have a higher Trp value of 4 , while having a lower Trcd value of 3 will not help much. If you cant get 2.5-3-3-6 , then try 2.5-4-3-6 . Loosen your Trcd value first.