Why isn't this working properly?? (ANSWERED)

I've notice recent created games on roblox are now having a 3D style button where when you click it, it goes down like an actual button. I've tried to recreate button by using TweenPosition but when you click it, it goes down really slowly.

This is the script I used

script.Parent:TweenPosition(UDim2.new(I PUT THE LOCATION TO GO DOWN))
wait(0.5)
script.Parent:TweenPosition(UDim2.new(I PUT THE LOCATION TO GO BACK UP))

If anyone knows why it goes down slowly please tell me.

P.S I created a quick demo script cause I deleted the original script, So thats why I didn't put the position. And also I used 2 TextButtons to make the button, One for the actual button and the second to make the shade so it looks 3D.