They made the arrow speed (how fast it flies in the air) slower in the latest patch. Your build will effect you damage and accuracy, if you have more strength, than you will hit harder but be less accurate, or more agility focused and be more accurate but not hit as hard as you possibly could.
Archery it very bad at lower levels, your not that accurate until you wpf reaches 100+, power draw reduces accuracy but ads damage, wpf raises accuracy quite a bit and damage is slightly raised(not sure about the damage though). You need to balance out the PD and WPF so your not to inaccurate, but you don't hit for almost no damage.