50% is a little high, but not much, the fluctuations is only part of the problem. The main issues is
1- it fluctuates too often, you ought to lower the standard deviation, make more of the hits closer too average dmg.
2-they only fluctuate down, not up, give us say, a 2% chance for a critical double-to-triple damage skill or auto hit. Dex ought to increase the probability and/or damage of criticals.
hatoyo- lvl 130 Rogue- Rhiannon
hat0y0- lvl 83 Druid- Rhiannon
Bluejay- lvl 68 warrior- Rhiannon
Banshee- lvl 51 ranger- Rhiannon
(name withheld)- lvl 46 Mage- Top-Secret