Lazy macro question

[suicidesspyder]

This one works pretty well..

/targetenemy [noharm]
/cast [noform] !Shadowform
/castsequence reset=0.3 0,1,2,Shadow Word: Death
/castsequence reset=0.3 0,1,Halo
/castsequence reset=0.3 0,Shadowfiend
/castsequence [nochanneling] reset=target/19 Shadow Word: Pain,Vampiric Touch,Mind Flay,Mind Flay,Mind Flay
/castsequence Mind Blast,Mind Blast,Mind Blast,Devouring Plague

Only thing is it seems like dps is lacking big time. Im on the ptr server trying it out in pvp gear and getting around 70-80k dps thinking it should be higher. I can stream on twitch tomorrow night if someone wants to give me a hint or two ive what im doing wrong.