Help with my Rotation for Summoner when using Fester

[NintenPyjak64]

First of all, stop using Macros, they'll only slow you down, unless they're for off GCD abilities, like Spur, Rouse, etc

Second, use Bio 2 > Miasma > Bio 1 to start with, this is so you ensure you get the most out of the duration of the DoTs. You'll need to wait a second for Bio to stick to the mob so don't blast Fester right after Bio 1.

If you so choose try to use Ruin II before Fester to force the GCD, and for using Virus, don't waste it, if the boss is about to do Raid wide damage and they have the antibody buff, you could be making your healers work more then they need to

This is what I use as a starting rotation (Again, don't use macros for GCD abilities):
(Obey + Spur/Rouse macro) Raging Strikes(same macro) > Bio 2 > Miasma > Bio 1 (Fester when debuff is applied) > Shadow Flare hardcast (Contagion) > Ruin 1 > Ruin 2 (Fester, at this point you should still have Raging Strikes active), then after this is priority based, if I don't need to do anything, I keep weaving Ruin 1 and Fester and reapply debuffs Bio 1 > Miasma > Bio 2. After your second Fester with raging strikes, it's all priority based

Finally for the damage you're looking for, as an i86 with a crit build, I'm seeing my Festers constantly crit for 1.1-1.3k, or ~800-900 with no crit with the stats I have now, get more gear and you'll see the numbers slowly rise. Just remember your stat priority should be Weapon Damage > INT > Crit (Or accuracy before crit if you plan on running Binding Coil)