Your damage for Garuda does seem quite low. How fast are you killing her (do you kill the clones at all and if you do, how many times)?

I remember parsing 30k on our last run yesterday, tried to find some parses to see is this a usual number but couldn't find any for now (will check on our next run which should be on Monday, I think). Then again, we tend to go a bit slow on this fight, killing the clones even 3 times sometimes, and that affects total dmg a lot.

I'm using Flame Lieutenant's Bow. My stats are PIE 344, DEX 298, ATT 532, ACC 390. With this ACC I always get close to 100% ACC (never lower than 95%) eating Jerked Beef, so I would say you really don't need any more than 400 ACC for this on BRD.

You mentioned you aren't able to combo in this fight, why is that?