the ripple effect on Dashboard will only show if you have it set to not show as a space in Mission Control's preferences. if you can swipe to Dashboard then the ripple animation will not work.
if you have full resolution, you likely have QE/QI enabled. stop worrying.
In my native language i can only say "PERKELE" to this. That's when you have trying to find and find a solution and you read from a small post like this that it is so d@mn simple.
I just unchecked that option from MissionControl and there it is.... ripple effect on dashboard.