Hoppy - wheaty 10 gallons

Hi everyone!
I ran this as a 5 gallon recipe, and had a lot of success, but have found that doubling the recipe didn’t equal twice as much of the same beer, not sure why… Although if you have any thoughts on that I’m all ears! Anyways, here’s the recipe…

15 lbs 2 row
4lbs crystal 60
3 lbs torified wheat
2oz centenial @60
.66 oz cent. @ 45
.33 cent. @30
10z wilamette @15
4grams seeds of paradise @ 5
Cali starter.

Thoughts, anything is appreciated!