So I normally run raid finder and reg DS every week, and my DPS lacks, and Im not exactly sure why... I know for a fact fire mages can do very good DPS, but I also know that fire mage DPS varies very much depending on RNG. So I'm not sure if I'm running into a bunch of bad luck, or I'm missing something. Or both. Ignite munching seems to screw me a lot when it comes to my Combustion. I can rarely get a high end combustion.
I fully buff with flasks/food.
Sorry i dont have any logs to show you. But I range from 22-25k, for example yesterday I did madness on regular. Was pulling 38k first couple attempts and when we downed him I pulled 31k...
You'll really need to link some logs. Your gear is certainly decent enough to do more than 31k on madness, but w/o seeing what your rotation looked like it's hard to say for sure. Your priority system is basically ok (although you don't have to wait for the pyro DOT on combustion).
It's really hard for me to judge and compare my dps to that of a normal raider, but in LFR (don't think I'm just good enough yet for normal) I manage around 55k dps on Madness. Around 25-30k on other bosses. I usually open with a LB and Scorch to get Critical Mass up and then throw in a Fireball followed by Flame Orb, then cast Fireball until Hot Streak! pops up, I don't use Combustion until my Pyroblast crits and I got LB active. The only exception is when the boss is near death and Combustion might not finish in time if I wait for a Pyro crit. Then again I'm not that great in Fire, I used to PvE in Frost (yes, frost, laugh all you want but outdpsed fire mages lol) until Cataclysm came out. I'm looking to become a better mage so please, if there are suggestions for me, they are more than welcome.
Madness specifically really hinges on how you handle the high damage portions of the fight. Keeping your rotation clean is important, but that alone won't give you the numbers you see other mages pulling.
Things to do to improve.
1 - Hemmorage oozes. This is one of the highest potential damage phases of the fight. You want to maximize spellweave procs. Spellweave procs from dot ticks, the initial hit of flamestrike, blast wave, and any direct damage spells. Spellweave damage requires you to get the most hits/second, not the highest-damage hits/second. What you'll want to do is blast wave, flamestrike, impact if there is an ignite on your target, then resort to Arcane Explosion. Your spells will be doing lower dps, but you will get a lot of spellweave procs, which ultimately do much more damage.
2 - Combustion. It's a huge part of your damage and needs to be used accordingly. Ideally, you want to do this when targets are below 35% health where Molten Fury kicks in. Ideally, you can get 2 of these per platform, the first on the Mutated Corruption and the second on the arm/wing of Deathwing. The second should be used when Deathwing goes into his increased damage phase after he has high stacks of his debuff (this happens shortly before he starts to cast Cataclysm).
3 - Mana. A long fight like this requires you to do some mana management. Since using Evocation is a loss of dps time, you need to do as much as possible to avoid the need to use it. Swap to Mage Armor when you are moving between platforms to improve regen, and make sure to refresh your mana gem when needed. You should be able to use mana gem at least 4-5 times during this fight, possibly more, so don't be reluctant to burn charges.
4 - Blistering Tentacles. Your spells are slow, so doing a normal rotation on these will not give you the numbers you want. Instead, swap to your fast rotation of LB/fire blast/scorch. This maximizes hits on the tentacles and allows you to proc spellweave (which hits the Arm/Wing, even though the tentacles themselves are immune to the effect). You can actually neglect LB on these mobs to save mana as well, since most groups will kill them before LB has ticked enough times to become cost efficient.
With regards to mana management, I disagree about spending the GCD to swap armors. Of late, my mana rotation has been as follows:
* Mana gems on cooldown
* On the 2nd platform, put up flame orb, critical mass and living bomb, then evocate
* Create new mana gems as soon as you get to the 4th platform
* Put up flame orb, critical mass and living bomb, then evocate
Yes the evocations are loss of DPS ticks, but to me getting from 25% up to nearly 100% on the evocation ticks plus the healing that can help healers after the higher damage phases outweighs the loss of crit you'll have casting spells in mage armor plus the GCDs used to change back and forth.
My latest madness (10 man normal) parse using that strategy is 49.5k dps-e (with admittedly much better gear than the OP).
-Your hit is .34% over. That may not seem like a ton at first but when you are min/maxing your toon, it is a substantial amount. You should be sitting at most .10% over.
- Never ever gem haste as a Fire Mage. You'll find it is a waste of time when scoping out what is the best way to gear your toon for a single target encounter.
Other than being a heavily RNG spec you should not be too concerned with your numbers as long as you're doing everything right. If I were you I'd read up on the core mechanics of the AOE rotation in certain situations and when to use Combustion. As far as specific encounters go, one has to essentially map out what they are doing and what they are going to do for the most optimal outcome. Being prepared and having a good reaction to certain situations is always the key to having a solid dps performance on top knowing what to do in those situations as far as your class/spec is concerned.