The eggs are called "a stirge eggsack".

note the eggs look like the cocoons from the spider mistress in TOFSx2 only a little smaller

Eggs seems faster than 30 sec.
Drag named into one of the side rooms to help with the big knockback.

Tab target works great for the egg sacks.

If you get kb, the arcane is cureable with potions. Makes it easy to run back to the fight.

The egg sacks are on a 30second timer.
Kill the egg sacks and no add spawn.
Easy fight.