Switched from ProV1 to Kirkland, lost 10 yards off the tee?

[ChipShot_Charlie]

So I've been playing ProV1s for like a year now, found a deal on them, got used to the feel. Then I saw all the hype about Kirkland balls, way cheaper, figured why not. Bought a box, played 18 yesterday. Driver felt solid but every drive was like 10 yards shorter than usual. Irons too, maybe half a club shorter. Greenside spin seemed fine, maybe even better? But losing distance off the tee is killing me. I'm a 15 handicap, swing speed around 95. Anyone else try Kirklands? Did you notice distance loss? Or is it just me? Wondering if I should switch back or if it's in my head.