Is Frost AoE meant to be really weak or am I doing something wrong? If there are 4+ mobs im casting Blizzard into Frozen Orb into Ice Lance until out of Fingers of Frost then Cone of Cold (Im unsure of Cone of Cold). If mobs are still alive and Frozen Orb is on cooldown I cast new Blizzard into Frostbolt spam to get more Fingers of Frost.
My AoE is for the most part really really low compared to other classes/speccs (now that Frozen orb is bugged it's non-existent).
Surely I must be doing something wrong because Im almost certain Frost AoE isn't as bad as my experience with it?
Thanks
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I think frost aoe is fine. Whether it is weak or not depends on your barometer for aoe output and the encounter(s) you wish to reference.
If you are in a raid, then it is
generally safe to say frost is weaker than other specs in terms of aoe output, largely because the optimal talents for raiding as frost are not focused on maximizing your aoe output. For raids, you would typically use Arctic Gale and Splitting Ice, but deviating in other tiers, say from Thermal Void to Comet Storm, may hurt your ST output too much.
I run a pretty aoe-heavy build for m+ with RoF/Shimmer/RoP/FN/AG/CS. This provides a lot of aoe tools and you can use RoP and pet nova to maximize burst windows/fof charges. RoF puts out reasonable boss/fortified mini-boss damage and IV provides a big boost if you anticipate it to be up before bosses. You will also have a high up-time on the Sephuz proc if you have that legendary.
Affixes may influence the choice of talents, however.