Still having much problems with priest. I have mind freeze autocasted during spam per manifesto. Never know when to strangulate and not specced for it. Should I? When should I cast strangulate?

Also can't seem to get lichbourne death coil heals working. I find my DKs dying faster when I try to cast this.

I am in almost full vicious gladiator gear with one piece ruthless and 2 ruthless 1H swords (DW). DPS is usually around 9 to 10k on dummies. Rarely above 5k in actual 5v5. Should their DPS be this low? I am basically just spamming HB + NS + FS.