Waiting .025 seconds actually waiting .03?

I have a little bar in my frame, and every .025 seconds, I expand it by 1% of the screen's width. I do this 40 times, so it should take 40 seconds. Here's the code:

local start = tick()
for i = 1, 40 do
    if hasReleased then break end

    gui.Frame.Bar.Size = UDim2.new(gui.Frame.Bar.Size.X.Scale + 0.01, 0, 0.1, 0)
    gui.Frame.Bar.Transparency = 0
    wait(.025)

    print(tick() - start)
end

But each time it prints, instead of increasing by .025, it seems to wait around .03 seconds:

Image

In case it matters, my Roblox Studio default wait() time is 0.010000000000000000208 aka 0.01